CVE-2017-7244

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2022-05-14. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 5.5Exploit: None knownExposed: 0

A fix is available — apply it.

The _pcre32_xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
30(Track)
EG Risk 30/100SSVC: Track

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
Severity55% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
79%
KEV
Not listed

Published

March 23, 2017

Last Modified

June 17, 2026

References (8)

Vendor Advisories for CVE-2017-7244(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhathttpd2018-08-16redhat

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

(3 across 3 ecosystems)
Alpine:v3.6(1)
PackageVulnerable rangeFixed inDependents
pcre—8.41-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
pcre3—2:8.39-3—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
pcre3—2:8.39-3—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 24× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 146 total refreshes for this CVE.

  1. 2026-08-19 16:59 UTCEPSS rescore
  2. 2026-08-18 13:43 UTCEPSS rescore
  3. 2026-08-16 14:51 UTCEPSS rescore
  4. 2026-08-16 02:10 UTCEPSS rescore
  5. 2026-08-15 01:26 UTCEPSS rescore
  6. 2026-08-14 04:19 UTCOSV refresh
  7. 2026-08-12 13:46 UTCEPSS rescore
  8. 2026-08-09 13:42 UTCEPSS rescore
  9. 2026-08-08 16:32 UTCEPSS rescore
  10. 2026-08-07 16:22 UTCEPSS rescore
  11. 2026-08-06 13:42 UTCEPSS rescore
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  13. 2026-08-05 19:13 UTCEPSS rescore
  14. 2026-08-02 02:23 UTCEPSS rescore
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  16. 2026-08-01 04:12 UTCEPSS rescore
  17. 2026-07-30 16:24 UTCEPSS rescore
  18. 2026-07-30 01:26 UTCEPSS rescore
  19. 2026-07-29 09:04 UTCOSV refresh
  20. 2026-07-28 15:32 UTCEPSS rescore
  21. 2026-07-26 14:51 UTCEPSS rescore
  22. 2026-07-26 14:51 UTCEPSS rescore
  23. 2026-07-23 14:15 UTCEPSS rescore
  24. 2026-07-23 01:30 UTCEG score recompute
  25. 2026-07-22 22:10 UTCEG score recompute
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  1. 2026-07-22 14:04 UTCEPSS rescore
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  3. 2026-07-20 17:04 UTCEPSS rescore
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  5. 2026-07-19 14:28 UTCEPSS rescore
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  7. 2026-07-19 02:26 UTCEPSS rescore
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  9. 2026-07-18 10:01 UTCEPSS rescore
  10. 2026-07-16 16:59 UTCEPSS rescore
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  12. 2026-07-15 16:55 UTCEPSS rescore
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  16. 2026-07-13 22:26 UTCEPSS rescore
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  18. 2026-07-12 05:43 UTCEPSS rescore
  19. 2026-07-12 01:41 UTCOSV refresh
  20. 2026-07-11 08:24 UTCEPSS rescore
  21. 2026-07-09 19:06 UTCEPSS rescore
  22. 2026-07-08 15:11 UTCEPSS rescore
  23. 2026-07-07 13:42 UTCEPSS rescore
  24. 2026-07-06 16:24 UTCEPSS rescore
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  26. 2026-07-06 02:20 UTCEPSS rescore
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  28. 2026-07-05 02:27 UTCEPSS rescore
  29. 2026-07-04 06:28 UTCEPSS rescore
  30. 2026-07-04 06:28 UTCEPSS rescore
  31. 2026-07-02 16:54 UTCEPSS rescore
  32. 2026-07-01 15:03 UTCEPSS rescore
  33. 2026-06-30 23:19 UTCEPSS rescore
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  35. 2026-06-29 14:03 UTCEPSS rescore
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  37. 2026-06-28 04:53 UTCEPSS rescore
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  39. 2026-06-27 03:06 UTCEPSS rescore
  40. 2026-06-25 13:47 UTCEPSS rescore
  41. 2026-06-24 14:02 UTCEPSS rescore
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  43. 2026-06-23 21:30 UTCEPSS rescore
  44. 2026-06-23 21:30 UTCEPSS rescore
  45. 2026-06-23 08:00 UTCOSV refresh
  46. 2026-06-22 14:23 UTCEPSS rescore
  47. 2026-06-22 14:23 UTCEPSS rescore
  48. 2026-06-21 14:54 UTCEPSS rescore
  49. 2026-06-21 14:54 UTCEPSS rescore
  50. 2026-06-18 17:50 UTCEPSS rescore
  51. 2026-06-17 17:50 UTCEPSS rescore
  52. 2026-06-16 17:50 UTCEPSS rescore
  53. 2026-06-15 17:45 UTCEPSS rescore
  54. 2026-06-14 23:14 UTCEPSS rescore
  55. 2026-06-14 23:14 UTCEPSS rescore
  56. 2026-06-13 22:58 UTCEPSS rescore
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  58. 2026-06-12 23:09 UTCEPSS rescore
  59. 2026-06-12 23:09 UTCEPSS rescore
  60. 2026-06-11 13:57 UTCEPSS rescore
  61. 2026-06-10 22:15 UTCEPSS rescore
  62. 2026-06-10 13:19 UTCEPSS rescore
  63. 2026-06-08 14:14 UTCEPSS rescore
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  65. 2026-06-07 15:22 UTCEPSS rescore
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  67. 2026-06-06 13:45 UTCEPSS rescore
  68. 2026-06-06 13:45 UTCEPSS rescore
  69. 2026-06-06 07:04 UTCOSV refresh
  70. 2026-06-05 22:44 UTCEPSS rescore
  71. 2026-06-05 22:44 UTCEPSS rescore
  72. 2026-06-05 06:08 UTCEPSS rescore
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  74. 2026-06-04 13:10 UTCEPSS rescore
  75. 2026-06-04 13:10 UTCEPSS rescore

Frequently asked(5)

What is CVE-2017-7244?
CVE-2017-7244 is a medium vulnerability published on March 23, 2017. The pcre32xclass function in pcre_xclass.c in libpcre1 in PCRE 8.40 allows remote attackers to cause a denial of service (invalid memory read) via a crafted file.
When was CVE-2017-7244 disclosed?
CVE-2017-7244 was first published in the National Vulnerability Database on March 23, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2017-7244 actively exploited?
CVE-2017-7244 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 20.9% of all scored CVEs.
What is the CVSS score of CVE-2017-7244?
CVE-2017-7244 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2017-7244?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2017-7244, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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