CVE-2026-77219

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

Score 7.1 from GitHub Security Advisory published 2026-08-21. a secondary CVSS source baseline 7.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: None knownExposed: 0

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

GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed integer arithmetic; for sufficiently large values, the result wraps to a negative number, bypassing the bounds check and causing the pixel reader to access heap memory past the end of the allocated buffer. The over-read contents are interpreted as pixel color values and rendered on screen.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
32(Track)
EG Risk 32/100SSVC: 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
Severity71% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
3%
KEV
Not listed

Published

August 21, 2026

Last Modified

August 21, 2026

Advisory Details (2)

Auto-updated Aug 21, 2026
Upstream fix merged — awaiting tagged release. Sources: github_commit.
generic

GNU Emacs < 31.0.91 Heap Over-Read via PBM/PPM/PGM Image Loader | Advisories | VulnCheck

https://www.vulncheck.com/advisories/gnu-emacs-heap-over-read-via-pbm-ppm-pgm-image-loader
github_commit

commit b07e634e4cf4 (emacs-mirror/emacs)

Fix landed in emacs-mirror/emacs commit b07e634e4cf4 — awaiting tagged release

https://github.com/emacs-mirror/emacs/commit/b07e634e4cf45162ae0178e32092b040587f2c6c

Vendor Advisories for CVE-2026-77219(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
emacs1:28.2+1-15 ... 1:30.2+1-9 (53 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
emacs1:30.1+1-6 ... 1:30.2+1-9 (16 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
emacs1:30.1+1-6 ... 1:30.2+1-9 (15 versions)——

Weakness Classification(2)

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

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 39× in last 7d / 129× 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 137 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-77219?
CVE-2026-77219 is a high vulnerability published on August 21, 2026. GNU Emacs before 31.0.91 contains an integer overflow in the PBM/PPM/PGM image loader that allows an attacker to leak heap memory contents by supplying a crafted image with large dimensions and an elevated max color index. The image loader multiplies image dimensions and channel count using signed…
When was CVE-2026-77219 disclosed?
CVE-2026-77219 was first published in the National Vulnerability Database on August 21, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-77219 actively exploited?
CVE-2026-77219 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 97.2% of all scored CVEs.
What is the CVSS score of CVE-2026-77219?
CVE-2026-77219 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-77219?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-77219, 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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