CVE-2017-15710

HIGHNVD 7.57.5
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 4 sources updated this weekElevated
7.5EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 17%CVSS: 7.5Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
50
EG Risk 50/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity75% × 45%
Impact severity (EG Severity): CVSS 7.5 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
17%
EPSS %ILE
97th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.5): severity, escalated by confirmed exploitation. This CVE's 7.5 is its impact severity (EG Severity), not escalated.

EG Severity
7.5 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
17% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-21). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

March 26, 2018

Last Modified

November 21, 2024

References (27)

15 of 27 shown · show the other 12

Patch Availability(7)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
ubuntuapache2-utils (2.4.18-2ubuntu3.8) @ xenial2026-10-22ubuntu
ubuntuapache2.2-bin (2.2.22-1ubuntu1.15) @ precise2026-10-22ubuntu
ubuntuapache2-utils (2.4.29-1ubuntu4.1) @ bionic2026-10-22ubuntu
redhathttpd-0:2.4.6-93.el72020-03-31redhat
redhathttpd2019-02-18redhat
redhatjbcs-httpd24-openssl-1:1.0.2n-14.jbcs.el72019-02-18redhat
redhathttpd24-nghttp2-0:1.7.1-7.el72018-11-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(28 across 28 ecosystems)
Alpine:v3.10(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.11(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.12(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.13(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.14(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.15(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.16(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.17(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.18(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.19(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.20(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.21(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.22(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.23(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.24(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.4(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.5(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.6(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.7(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.8(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Alpine:v3.9(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-r0: fixed in 2.4.33-r0
—
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-1: fixed in 2.4.33-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-1: fixed in 2.4.33-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-1: fixed in 2.4.33-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
apache2—
  • every version up to 2.4.33-1: fixed in 2.4.33-1
—
Debian:7(1)
PackageVulnerable rangeFix by version rangeDependents
apache22.2.22-13 ... 2.2.22-13+deb7u9 (13 versions)
  • every version up to 2.2.22-13+deb7u13: fixed in 2.2.22-13+deb7u13
—
Debian:8(1)
PackageVulnerable rangeFix by version rangeDependents
apache22.4.10-10 ... 2.4.10-10+deb8u9 (12 versions)
  • every version up to 2.4.10-10+deb8u12: fixed in 2.4.10-10+deb8u12
—
Debian:9(1)
PackageVulnerable rangeFix by version rangeDependents
apache22.4.25-3, 2.4.25-3+deb9u1, 2.4.25-3+deb9u2, 2.4.25-3+deb9u3
  • every version up to 2.4.25-3+deb9u4: fixed in 2.4.25-3+deb9u4
—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(7)

Data Freshness Timeline

(refreshed 11× in last 7d / 34× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 95 of 153 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 5 repeat rows among the latest 100 are merged into the row they repeat. The 58 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-23 16:26 UTCEPSS rescoreEPSS 17% · 97th percentile
  2. 2026-10-22 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  3. 2026-10-22 03:54 UTCEG score recompute
  4. 2026-10-22 03:54 UTCVendor advisory
  5. 2026-10-22 03:54 UTCGHSA enrichmentGHSA-9q97-qm54-9797 · GitHub severity HIGH · GitHub CVSS 7.5
  6. 2026-10-21 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  7. 2026-10-20 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  8. 2026-10-19 16:26 UTCEPSS rescoreEPSS 17% · 97th percentile
  9. 2026-10-18 16:26 UTCEPSS rescoreEPSS 17% · 97th percentile
  10. 2026-10-18 10:37 UTCEG score recompute
  11. 2026-10-17 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  12. 2026-10-16 16:29 UTCEPSS rescoreEPSS 17% · 97th percentile
  13. 2026-10-15 16:26 UTCEPSS rescoreEPSS 17% · 97th percentile
  14. 2026-10-14 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  15. 2026-10-13 16:27 UTCEPSS rescoreEPSS 17% · 97th percentile
  16. 2026-10-12 20:33 UTCEG score recompute
  17. 2026-10-12 16:28 UTCEPSS rescoreEPSS 17% · 97th percentile
  18. 2026-10-12 00:56 UTCEG score recompute
  19. 2026-10-11 13:40 UTCEPSS rescoreEPSS 17% · 97th percentile
  20. 2026-10-10 19:55 UTCEPSS rescoreEPSS 17% · 97th percentile
  21. 2026-10-09 20:02 UTCEPSS rescoreEPSS 17% · 97th percentile
  22. 2026-10-08 16:35 UTCEPSS rescoreEPSS 17% · 97th percentile
  23. 2026-10-07 23:41 UTCEPSS rescoreEPSS 17% · 97th percentile
  24. 2026-10-06 15:11 UTCEPSS rescoreEPSS 17% · 97th percentile
  25. 2026-10-05 17:38 UTCEPSS rescoreEPSS 17% · 96th percentile
Show 70 more
  1. 2026-10-04 23:18 UTCEPSS rescoreEPSS 17% · 96th percentile
  2. 2026-10-03 14:21 UTCEPSS rescoreEPSS 17% · 96th percentile
  3. 2026-09-30 14:58 UTCEPSS rescoreEPSS 17% · 96th percentile
  4. 2026-09-30 09:28 UTCEG score recompute
  5. 2026-09-29 08:22 UTCOSV refresh
  6. 2026-09-28 13:45 UTCEPSS rescoreEPSS 17% · 96th percentile
  7. 2026-09-27 13:40 UTCEPSS rescoreEPSS 17% · 96th percentile
  8. 2026-09-26 15:53 UTCEPSS rescoreEPSS 17% · 96th percentile
  9. 2026-09-24 13:59 UTCEPSS rescoreEPSS 17% · 96th percentile
  10. 2026-09-19 15:36 UTCEPSS rescoreEPSS 17% · 96th percentile
  11. 2026-09-18 19:22 UTCEPSS rescoreEPSS 17% · 96th percentile
  12. 2026-09-17 19:22 UTCEPSS rescoreEPSS 17% · 96th percentile
  13. 2026-09-15 03:05 UTCEPSS rescoreEPSS 18% · 96th percentile
  14. 2026-09-12 14:55 UTCEPSS rescoreEPSS 18% · 96th percentile
  15. 2026-09-11 09:31 UTCEPSS rescoreEPSS 18% · 96th percentile
  16. 2026-09-10 09:26 UTCEPSS rescoreEPSS 18% · 96th percentile
  17. 2026-09-09 15:23 UTCOSV refresh
  18. 2026-09-04 13:56 UTCEPSS rescoreEPSS 18% · 96th percentile
  19. 2026-09-04 05:01 UTCEPSS rescoreEPSS 18% · 96th percentile
  20. 2026-09-02 14:07 UTCEPSS rescoreEPSS 18% · 96th percentile
  21. 2026-09-01 13:48 UTCEPSS rescoreEPSS 18% · 96th percentile
  22. 2026-09-01 03:31 UTCEPSS rescoreEPSS 18% · 96th percentile
  23. 2026-08-30 19:13 UTCEPSS rescoreEPSS 18% · 96th percentile
  24. 2026-08-28 21:36 UTCEPSS rescoreEPSS 17% · 96th percentile
  25. 2026-08-27 14:20 UTCEPSS rescoreEPSS 18% · 96th percentile
  26. 2026-08-26 14:41 UTCEPSS rescoreEPSS 18% · 96th percentile
  27. 2026-08-25 13:44 UTCEPSS rescoreEPSS 18% · 96th percentile
  28. 2026-08-24 14:10 UTCEPSS rescoreEPSS 18% · 96th percentile
  29. 2026-08-22 21:07 UTCOSV refresh
  30. 2026-08-21 23:44 UTCEPSS rescoreEPSS 18% · 96th percentile
  31. 2026-08-20 22:50 UTCEPSS rescoreEPSS 18% · 96th percentile
  32. 2026-08-19 16:59 UTCEPSS rescoreEPSS 18% · 96th percentile
  33. 2026-08-18 13:43 UTCEPSS rescoreEPSS 18% · 96th percentile
  34. 2026-08-16 14:51 UTCEPSS rescoreEPSS 18% · 96th percentile
  35. 2026-08-16 02:10 UTCEPSS rescoreEPSS 18% · 96th percentile
  36. 2026-08-15 01:26 UTCEPSS rescoreEPSS 18% · 96th percentile
  37. 2026-08-13 21:56 UTCEPSS rescoreEPSS 18% · 96th percentile
  38. 2026-08-08 16:32 UTCEPSS rescoreEPSS 18% · 96th percentile
  39. 2026-08-07 16:22 UTCEPSS rescoreEPSS 18% · 96th percentile
  40. 2026-08-07 00:33 UTCOSV refresh
  41. 2026-08-06 13:42 UTCEPSS rescoreEPSS 18% · 96th percentile
  42. 2026-08-05 19:12 UTCEPSS rescoreEPSS 18% · 96th percentile
  43. 2026-08-04 15:05 UTCEPSS rescoreEPSS 18% · 96th percentile
  44. 2026-08-04 10:32 UTCEPSS rescoreEPSS 18% · 96th percentile
  45. 2026-08-03 10:30 UTCEPSS rescoreEPSS 18% · 96th percentile
  46. 2026-08-01 04:11 UTCEPSS rescoreEPSS 18% · 96th percentile
  47. 2026-07-30 16:24 UTCEPSS rescoreEPSS 18% · 96th percentile
  48. 2026-07-30 01:26 UTCEPSS rescoreEPSS 18% · 96th percentile
  49. 2026-07-28 15:32 UTCEPSS rescoreEPSS 18% · 96th percentile
  50. 2026-07-26 14:51 UTCEPSS rescoreEPSS 18% · 96th percentile
  51. 2026-07-25 14:13 UTCEPSS rescoreEPSS 18% · 96th percentile
  52. 2026-07-23 14:15 UTCEPSS rescoreEPSS 18% · 96th percentile
  53. 2026-07-23 01:27 UTCEG score recompute
  54. 2026-07-22 22:06 UTCEG score recompute
  55. 2026-07-22 14:04 UTCEPSS rescoreEPSS 18% · 96th percentile
  56. 2026-07-21 15:48 UTCOSV refresh
  57. 2026-07-21 15:21 UTCEPSS rescoreEPSS 18% · 96th percentile
  58. 2026-07-20 17:04 UTCEPSS rescoreEPSS 18% · 96th percentile
  59. 2026-07-19 02:26 UTCEPSS rescoreEPSS 18% · 96th percentile
  60. 2026-07-18 10:00 UTCEPSS rescoreEPSS 18% · 96th percentile
  61. 2026-07-16 16:59 UTCEPSS rescoreEPSS 18% · 96th percentile
  62. 2026-07-15 16:54 UTCEPSS rescoreEPSS 18% · 96th percentile
  63. 2026-07-15 01:56 UTCEPSS rescoreEPSS 18% · 96th percentile
  64. 2026-07-13 22:26 UTCEPSS rescoreEPSS 18% · 96th percentile
  65. 2026-07-12 05:43 UTCEPSS rescoreEPSS 18% · 96th percentile
  66. 2026-07-11 08:24 UTCEPSS rescoreEPSS 18% · 96th percentile
  67. 2026-07-09 19:06 UTCEPSS rescoreEPSS 18% · 96th percentile
  68. 2026-07-08 15:10 UTCEPSS rescoreEPSS 18% · 96th percentile
  69. 2026-07-07 13:42 UTCEPSS rescoreEPSS 18% · 96th percentile
  70. 2026-07-06 16:24 UTCEPSS rescoreEPSS 18% · 96th percentile

Frequently asked(5)

What is CVE-2017-15710?
CVE-2017-15710 is a high-severity vulnerability; its CVE record was published on March 26, 2018. In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, modauthnzldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset…
When was CVE-2017-15710 made public?
CVE-2017-15710 was made public on March 23, 2018: that is the date its CVE record's CNA, Apache Software Foundation, gives for when the vulnerability was made public. The CVE record itself was published on March 26, 2018. EchelonGraph's copy of the record carries a last-modified date of November 21, 2024; the record at its source may have been updated since.
Is CVE-2017-15710 actively exploited?
CVE-2017-15710 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 17% probability of exploitation in the next 30 days (97th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-15710?
CVE-2017-15710 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2017-15710?
A fix for CVE-2017-15710 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2017-15710

Explore →

Is Your Infrastructure Affected by CVE-2017-15710?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.