CVE-2026-78465

HIGHPre-NVD 7.07.0—
EchelonGraph scoreHIGH confidence

Score 7.0 from GitHub Security Advisory (severity: HIGH) published 2026-08-24. a secondary CVSS source baseline 7.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
7.0EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.0Exploit: Elevated riskExposed: 0

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

A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large dimensions, the calculation exceeds the 32-bit integer limit and overflows, resulting in an undersized heap-based buffer allocation. This integer overflow issue results in a heap-based buffer overflow when the plugin subsequently writes image data into the undersized buffer, causing memory corruption, potentially leading to arbitrary code execution or a denial of service.

CVSS v3
7.0
EG Score
7.0(high)
EG Risk
48(Track*)
EG Risk 48/100SSVC: 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
Severity70% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
0%
EPSS %ILE
15%
KEV
Not listed

Published

August 24, 2026

Last Modified

September 1, 2026

Advisory Details (3)

Auto-updated Aug 24, 2026
🔬 Proof of concept available. Patch available. Sources: redhat.
generic🟡 PoC Available

Integer overflow in PCX loader (planes=4) leads to heap overflow on 32-bit (CWE-190, CWE-787) (#16578) · Issues · GNOME / GIMP · GitLab

https://gitlab.gnome.org/GNOME/gimp/-/work_items/16578
redhat

2522057 – (CVE-2026-78465) CVE-2026-78465 gimp: integer overflow in PCX loader (planes=4) leads to heap overflow on 32-bit

https://bugzilla.redhat.com/show_bug.cgi?id=2522057
redhat Patch Available

CVE-2026-78465 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-78465

Vendor Advisories for CVE-2026-78465(1)

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

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
gimp2.10.34-1 ... 3.2.4-3 (56 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
gimp3.0.4-3 ... 3.2.4-3 (29 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
gimp3.0.4-3 ... 3.2.4-3 (19 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 26× in last 7d / 109× 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 109 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-78465?
CVE-2026-78465 is a high vulnerability published on August 24, 2026. A flaw was found in the file-pcx plugin in GIMP, affecting 32-bit builds only. When processing a PCX image file, the plugin calculates memory allocation sizes based on the image dimensions and the number of color planes. If a crafted file sets the number of planes to 4 alongside sufficiently large…
When was CVE-2026-78465 disclosed?
CVE-2026-78465 was first published in the National Vulnerability Database on August 24, 2026, with the most recent update on September 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-78465 actively exploited?
CVE-2026-78465 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 85.3% of all scored CVEs.
What is the CVSS score of CVE-2026-78465?
CVE-2026-78465 has a CVSS v3 base score of 7.0 (NVD).
How do I remediate CVE-2026-78465?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-78465, 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

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