CVE-2026-96442

HIGHPre-NVD 7.87.8—
EchelonGraph scoreHIGH confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-23. A secondary CVSS source baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this week
7.8EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code execution with the privileges of the user running Emacs.

CVSS v3
7.8
EG Score
7.8HIGHhigh confidence
EG Risk
35
EG Risk 35/100CISA SSVC

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%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines until it ships, then apply the release.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

September 23, 2026

Last Modified

September 24, 2026

Advisory Details (4)

Auto-updated Sep 23, 2026
Upstream fix merged — awaiting tagged release. Sources: redhat, github_commit.
generic

oss-security - Emacs arbitrary code execution: incomplete fix for CVE-2024-53920

https://www.openwall.com/lists/oss-security/2026/09/14/1
github_commit

commit abc802ee2eb0 (emacs-mirror/emacs)

Fix landed in emacs-mirror/emacs commit abc802ee2eb0 — awaiting tagged release

https://github.com/emacs-mirror/emacs/commit/abc802ee2eb0b1663349ddf22a461f8e54a383fb
github_commit

commit 135e6f63f08f (emacs-mirror/emacs)

Fix landed in emacs-mirror/emacs commit 135e6f63f08f — awaiting tagged release

https://github.com/emacs-mirror/emacs/commit/135e6f63f08fee3d374fa1a5187bce941a2d3e3c
redhat

2537347 – (CVE-2026-96442) CVE-2026-96442 emacs: Emacs: arbitrary code execution, incomplete fix for CVE-2024-53920

https://bugzilla.redhat.com/show_bug.cgi?id=2537347

Vendor Advisories for CVE-2026-96442(2)

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 rangeFix by version rangeDependents
emacs1:28.2+1-15 ... 1:30.2+1-9 (53 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
emacs1:30.1+1-6 ... 1:30.2+1-9 (16 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
emacs1:30.1+1-6 ... 1:30.2+1-9 (15 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 38× in last 7d / 65× 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.

  1. 2026-10-04 23:23 UTCEPSS rescore
  2. 2026-10-04 22:33 UTCGHSA enrichment
  3. 2026-10-04 09:54 UTCVendor advisory
  4. 2026-10-04 09:54 UTCGHSA enrichment
  5. 2026-10-03 21:14 UTCEG score recompute
  6. 2026-10-03 21:14 UTCVendor advisory
  7. 2026-10-03 21:14 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-03 08:34 UTCVendor advisory
  10. 2026-10-03 08:33 UTCGHSA enrichment
  11. 2026-10-02 19:43 UTCEG score recompute
  12. 2026-10-02 19:43 UTCVendor advisory
  13. 2026-10-02 19:43 UTCGHSA enrichment
  14. 2026-10-02 17:57 UTCEPSS rescore
  15. 2026-10-02 07:03 UTCEG score recompute
  16. 2026-10-02 07:03 UTCVendor advisory
  17. 2026-10-02 07:03 UTCGHSA enrichment
  18. 2026-10-01 19:51 UTCEPSS rescore
  19. 2026-10-01 18:24 UTCVendor advisory
  20. 2026-10-01 18:23 UTCGHSA enrichment
  21. 2026-10-01 05:23 UTCVendor advisory
  22. 2026-10-01 05:23 UTCGHSA enrichment
  23. 2026-09-30 16:44 UTCEG score recompute
  24. 2026-09-30 16:44 UTCVendor advisory
  25. 2026-09-30 16:44 UTCGHSA enrichment
Show 40 more
  1. 2026-09-30 15:04 UTCEPSS rescore
  2. 2026-09-30 03:32 UTCEG score recompute
  3. 2026-09-30 03:32 UTCVendor advisory
  4. 2026-09-30 03:32 UTCGHSA enrichment
  5. 2026-09-29 14:52 UTCVendor advisory
  6. 2026-09-29 14:52 UTCGHSA enrichment
  7. 2026-09-29 02:13 UTCEG score recompute
  8. 2026-09-29 02:13 UTCVendor advisory
  9. 2026-09-29 02:13 UTCGHSA enrichment
  10. 2026-09-28 13:52 UTCEPSS rescore
  11. 2026-09-28 13:52 UTCEPSS rescore
  12. 2026-09-28 13:33 UTCVendor advisory
  13. 2026-09-28 13:33 UTCGHSA enrichment
  14. 2026-09-28 00:54 UTCEG score recompute
  15. 2026-09-28 00:54 UTCGHSA enrichment
  16. 2026-09-27 13:49 UTCEPSS rescore
  17. 2026-09-27 12:14 UTCGHSA enrichment
  18. 2026-09-26 23:34 UTCEG score recompute
  19. 2026-09-26 23:34 UTCGHSA enrichment
  20. 2026-09-26 15:59 UTCEPSS rescore
  21. 2026-09-26 10:54 UTCEG score recompute
  22. 2026-09-26 10:54 UTCGHSA enrichment
  23. 2026-09-25 22:13 UTCGHSA enrichment
  24. 2026-09-25 09:00 UTCGHSA enrichment
  25. 2026-09-24 20:20 UTCEG score recompute
  26. 2026-09-24 20:20 UTCGHSA enrichment
  27. 2026-09-24 20:02 UTCEG score recompute
  28. 2026-09-24 20:02 UTCGHSA enrichment
  29. 2026-09-24 14:04 UTCEPSS rescore
  30. 2026-09-24 10:44 UTCGHSA enrichment
  31. 2026-09-24 08:04 UTCEG score recompute
  32. 2026-09-24 08:04 UTCGHSA enrichment
  33. 2026-09-23 19:48 UTCGHSA enrichment
  34. 2026-09-23 15:18 UTCEG score recompute
  35. 2026-09-23 15:18 UTCGHSA enrichment
  36. 2026-09-23 14:25 UTCEG score recompute
  37. 2026-09-23 14:25 UTCGHSA enrichment
  38. 2026-09-23 11:23 UTCEG score recompute
  39. 2026-09-23 10:21 UTCEG score recompute
  40. 2026-09-23 10:21 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-96442?
CVE-2026-96442 is a high vulnerability published on September 23, 2026. A code execution flaw was found in Emacs, affecting versions prior to 31.2. The Flymake mode using language backends other than Lisp would execute arbitrary code from the edited file while performing syntax checking. Viewing or editing untrusted files using Emacs could lead to arbitrary code…
When was CVE-2026-96442 disclosed?
CVE-2026-96442 was first published on September 23, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-96442 actively exploited?
CVE-2026-96442 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96442?
CVE-2026-96442 has a CVSS base score of 7.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-96442?
An upstream fix for CVE-2026-96442 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix. The vendor advisories EchelonGraph has for CVE-2026-96442 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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