CVE-2017-7557

HIGHNVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-13. NVD baseline CVSS 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
8.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
44
EG Risk 44/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity88% × 45%
The EG Score, 8.8 of 10.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability30% × 15%
EchelonGraph's default before algorithm v3.4: CISA had not published Automatable for this CVE.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track or Attend at high (mission-essential systems).
Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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 at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
56th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (no KEV listing, exploit record or EPSS ≥ 50%) · Automatable unknown (not published for this CVE) · Technical impact partial (CVSS below 9.0). 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

Published

August 22, 2017

Last Modified

June 17, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
Patch available.
Web page

PowerDNS Security Advisory 2017-02 for dnsdist: Alteration of ACLs via API authentication bypass - dnsdist documentation

https://dnsdist.org/security-advisories/powerdns-advisory-for-dnsdist-2017-02.html
Web page

SecurityFocus

http://www.securityfocus.com/bid/100508

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFix by version rangeDependents
dnsdist—
  • every version up to 1.2.0-1: fixed in 1.2.0-1
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
dnsdist—
  • every version up to 1.2.0-1: fixed in 1.2.0-1
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
dnsdist—
  • every version up to 1.2.0-1: fixed in 1.2.0-1
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
dnsdist—
  • every version up to 1.2.0-1: fixed in 1.2.0-1
—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 25× 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 83 of 156 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. 17 repeat rows among the latest 100 are merged into the row they repeat. The 73 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 13:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  2. 2026-10-10 19:55 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  3. 2026-10-09 20:02 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  4. 2026-10-08 16:36 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  5. 2026-10-08 01:24 UTCOSV refresh
  6. 2026-10-07 23:41 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  7. 2026-10-06 15:12 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  8. 2026-10-05 17:39 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  9. 2026-10-03 14:21 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  10. 2026-09-30 14:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  11. 2026-09-30 09:40 UTCEG score recompute
  12. 2026-09-28 13:45 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-09-27 13:40 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  14. 2026-09-26 15:53 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  15. 2026-09-26 00:19 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-09-24 13:59 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  17. 2026-09-23 13:42 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  18. 2026-09-21 20:27 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  19. 2026-09-20 20:09 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  20. 2026-09-19 15:36 UTCEPSS rescoreEPSS 0.8% · 56th percentile
  21. 2026-09-18 07:20 UTCOSV refresh
  22. 2026-09-17 19:22 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  23. 2026-09-15 03:05 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  24. 2026-09-13 16:42 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-09-12 14:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
Show 58 more
  1. 2026-09-11 09:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-09-07 15:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-09-05 15:24 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  4. 2026-09-04 13:56 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  5. 2026-09-04 05:02 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-09-02 14:07 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-09-01 03:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  8. 2026-08-30 19:13 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-08-30 08:00 UTCOSV refresh
  10. 2026-08-28 21:36 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  11. 2026-08-27 14:21 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  12. 2026-08-26 14:41 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  13. 2026-08-25 13:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  14. 2026-08-23 00:14 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-08-21 23:44 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  16. 2026-08-19 16:59 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  17. 2026-08-18 13:43 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-08-16 14:51 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  19. 2026-08-16 02:10 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  20. 2026-08-15 01:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-08-13 22:50 UTCOSV refresh
  22. 2026-08-12 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  23. 2026-08-09 13:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  24. 2026-08-08 16:32 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-08-07 16:22 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  26. 2026-08-06 13:42 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  27. 2026-08-05 19:13 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  28. 2026-08-02 02:23 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  29. 2026-08-01 04:12 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  30. 2026-07-30 16:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  31. 2026-07-30 01:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  32. 2026-07-29 02:21 UTCOSV refresh
  33. 2026-07-28 15:32 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  34. 2026-07-26 14:51 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  35. 2026-07-23 14:15 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  36. 2026-07-23 01:30 UTCEG score recompute
  37. 2026-07-22 22:10 UTCEG score recompute
  38. 2026-07-22 14:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  39. 2026-07-21 15:21 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  40. 2026-07-20 17:04 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  41. 2026-07-19 14:28 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  42. 2026-07-19 02:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  43. 2026-07-18 10:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  44. 2026-07-16 16:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  45. 2026-07-15 16:54 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  46. 2026-07-15 01:56 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  47. 2026-07-13 22:26 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  48. 2026-07-12 05:43 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  49. 2026-07-11 19:11 UTCOSV refresh
  50. 2026-07-11 08:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  51. 2026-07-09 19:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  52. 2026-07-08 15:11 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  53. 2026-07-07 13:42 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  54. 2026-07-06 16:24 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  55. 2026-07-06 02:20 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  56. 2026-07-05 02:27 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  57. 2026-07-04 06:28 UTCEPSS rescoreEPSS 0.8% · 52nd percentile
  58. 2026-07-02 16:54 UTCEPSS rescoreEPSS 0.8% · 52nd percentile

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2017-7557?
CVE-2017-7557 is a high-severity vulnerability; its CVE record was published on August 22, 2017. dnsdist version 1.1.0 is vulnerable to a flaw in authentication mechanism for REST API potentially allowing CSRF attack.
When was CVE-2017-7557 made public?
CVE-2017-7557 was made public on August 21, 2017: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on August 22, 2017. EchelonGraph's copy of the record carries a last-modified date of June 17, 2026; the record at its source may have been updated since.
Is CVE-2017-7557 actively exploited?
CVE-2017-7557 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (56th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2017-7557?
CVE-2017-7557 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2017-7557?
A fix for CVE-2017-7557 is available: update to the fixed version the vendor names in its advisory.

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