CVE-2009-0749

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-05-02. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 7.8Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which triggers memory corruption when the old pointer is accessed.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity78% × 45%
Exploitation2% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
73%
KEV
Not listed

Published

March 2, 2009

Last Modified

April 23, 2026

Advisory Details (8)

Auto-updated May 30, 2026
Patch available.
generic

oss-security - CVE request: optipng security release

http://www.openwall.com/lists/oss-security/2009/02/24/2
generic

OptiPNG: User-assisted execution of arbitrary code (GLSA 200903-12) — Gentoo security

http://www.gentoo.org/security/en/glsa/glsa-200903-12.xml
generic

OptiPNG / Bugs / #15 crash with particular GIF

http://sourceforge.net/tracker/index.php?func=detail&aid=2582013&group_id=151404&atid=780913
generic

About Secunia Research | Flexera

http://secunia.com/advisories/35685
generic

About Secunia Research | Flexera

http://secunia.com/advisories/34259
generic

About Secunia Research | Flexera

http://secunia.com/advisories/34201
generic

About Secunia Research | Flexera

http://secunia.com/advisories/34035
generic Patch Available

OptiPNG Home Page

http://optipng.sourceforge.net

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 35× 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 102 total refreshes for this CVE.

  1. 2026-07-25 14:12 UTCEPSS rescore
  2. 2026-07-25 01:11 UTCOSV refresh
  3. 2026-07-24 14:12 UTCEPSS rescore
  4. 2026-07-23 14:14 UTCEPSS rescore
  5. 2026-07-23 00:58 UTCEG score recompute
  6. 2026-07-23 00:36 UTCEG score recompute
  7. 2026-07-23 00:03 UTCEG score recompute
  8. 2026-07-22 21:42 UTCEG score recompute
  9. 2026-07-22 14:03 UTCEPSS rescore
  10. 2026-07-21 15:20 UTCEPSS rescore
  11. 2026-07-20 17:03 UTCEPSS rescore
  12. 2026-07-20 17:03 UTCEPSS rescore
  13. 2026-07-18 09:59 UTCEPSS rescore
  14. 2026-07-16 16:58 UTCEPSS rescore
  15. 2026-07-15 16:54 UTCEPSS rescore
  16. 2026-07-15 16:54 UTCEPSS rescore
  17. 2026-07-15 01:55 UTCEPSS rescore
  18. 2026-07-13 22:25 UTCEPSS rescore
  19. 2026-07-13 06:07 UTCEPSS rescore
  20. 2026-07-11 08:22 UTCEPSS rescore
  21. 2026-07-11 08:22 UTCEPSS rescore
  22. 2026-07-09 19:04 UTCEPSS rescore
  23. 2026-07-08 15:10 UTCEPSS rescore
  24. 2026-07-07 20:12 UTCOSV refresh
  25. 2026-07-06 16:23 UTCEPSS rescore
Show 75 more
  1. 2026-07-06 02:19 UTCEPSS rescore
  2. 2026-07-06 02:19 UTCEPSS rescore
  3. 2026-07-05 02:26 UTCEPSS rescore
  4. 2026-07-05 02:26 UTCEPSS rescore
  5. 2026-07-04 06:27 UTCEPSS rescore
  6. 2026-07-01 15:02 UTCEPSS rescore
  7. 2026-06-30 23:19 UTCEPSS rescore
  8. 2026-06-28 14:03 UTCEPSS rescore
  9. 2026-06-28 04:52 UTCEPSS rescore
  10. 2026-06-28 04:52 UTCEPSS rescore
  11. 2026-06-27 03:05 UTCEPSS rescore
  12. 2026-06-25 13:46 UTCEPSS rescore
  13. 2026-06-25 13:46 UTCEPSS rescore
  14. 2026-06-24 14:02 UTCEPSS rescore
  15. 2026-06-24 14:02 UTCEPSS rescore
  16. 2026-06-23 21:29 UTCEPSS rescore
  17. 2026-06-23 21:29 UTCEPSS rescore
  18. 2026-06-22 14:22 UTCEPSS rescore
  19. 2026-06-22 14:22 UTCEPSS rescore
  20. 2026-06-21 14:53 UTCEPSS rescore
  21. 2026-06-19 19:22 UTCEPSS rescore
  22. 2026-06-19 19:22 UTCEPSS rescore
  23. 2026-06-19 07:55 UTCOSV refresh
  24. 2026-06-18 17:49 UTCEPSS rescore
  25. 2026-06-18 17:49 UTCEPSS rescore
  26. 2026-06-17 17:49 UTCEPSS rescore
  27. 2026-06-17 17:49 UTCEPSS rescore
  28. 2026-06-16 17:49 UTCEPSS rescore
  29. 2026-06-16 17:49 UTCEPSS rescore
  30. 2026-06-15 17:44 UTCEPSS rescore
  31. 2026-06-14 23:14 UTCEPSS rescore
  32. 2026-06-14 23:14 UTCEPSS rescore
  33. 2026-06-13 22:57 UTCEPSS rescore
  34. 2026-06-12 23:08 UTCEPSS rescore
  35. 2026-06-12 23:08 UTCEPSS rescore
  36. 2026-06-10 22:14 UTCEPSS rescore
  37. 2026-06-10 13:17 UTCEPSS rescore
  38. 2026-06-08 14:13 UTCEPSS rescore
  39. 2026-06-07 15:22 UTCEPSS rescore
  40. 2026-06-07 15:22 UTCEPSS rescore
  41. 2026-06-06 13:44 UTCEPSS rescore
  42. 2026-06-06 13:44 UTCEPSS rescore
  43. 2026-06-06 13:44 UTCEPSS rescore
  44. 2026-06-05 22:44 UTCEPSS rescore
  45. 2026-06-05 22:44 UTCEPSS rescore
  46. 2026-06-05 06:07 UTCEPSS rescore
  47. 2026-06-04 13:09 UTCEPSS rescore
  48. 2026-06-04 13:09 UTCEPSS rescore
  49. 2026-06-02 20:10 UTCEPSS rescore
  50. 2026-06-02 20:10 UTCEPSS rescore
  51. 2026-06-01 13:49 UTCEPSS rescore
  52. 2026-06-01 13:49 UTCEPSS rescore
  53. 2026-05-31 22:28 UTCEPSS rescore
  54. 2026-05-31 22:28 UTCEPSS rescore
  55. 2026-05-31 00:13 UTCEPSS rescore
  56. 2026-05-31 00:13 UTCEPSS rescore
  57. 2026-05-30 17:54 UTCEG score recompute
  58. 2026-05-30 17:54 UTCGHSA enrichment
  59. 2026-05-29 13:40 UTCEPSS rescore
  60. 2026-05-28 13:42 UTCEPSS rescore
  61. 2026-05-28 13:42 UTCEPSS rescore
  62. 2026-05-28 13:42 UTCEPSS rescore
  63. 2026-05-27 13:38 UTCEPSS rescore
  64. 2026-05-27 13:38 UTCEPSS rescore
  65. 2026-05-26 13:41 UTCEPSS rescore
  66. 2026-05-26 13:41 UTCEPSS rescore
  67. 2026-05-26 07:16 UTCEPSS rescore
  68. 2026-05-26 07:16 UTCEPSS rescore
  69. 2026-05-25 20:16 UTCOSV refresh
  70. 2026-05-24 16:43 UTCEPSS rescore
  71. 2026-05-22 21:15 UTCEPSS rescore
  72. 2026-05-22 21:15 UTCEPSS rescore
  73. 2026-05-20 22:37 UTCEPSS rescore
  74. 2026-05-20 22:37 UTCEPSS rescore
  75. 2026-05-20 11:21 UTCEPSS rescore

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2009-0749?
CVE-2009-0749 is a high vulnerability published on March 2, 2009. Use-after-free vulnerability in the GIFReadNextExtension function in lib/pngxtern/gif/gifread.c in OptiPNG 0.6.2 and earlier allows context-dependent attackers to cause a denial of service (application crash) via a crafted GIF image that causes the realloc function to return a new pointer, which…
When was CVE-2009-0749 disclosed?
CVE-2009-0749 was first published in the National Vulnerability Database on March 2, 2009, with the most recent update on April 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2009-0749 actively exploited?
CVE-2009-0749 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 27.4% of all scored CVEs.
What is the CVSS score of CVE-2009-0749?
CVE-2009-0749 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2009-0749?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2009-0749, 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.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2009-0749

Explore →

Is Your Infrastructure Affected by CVE-2009-0749?

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

Start Free Scan →Browse All CVEs