CVE-2026-96442

HIGHPre-NVD 7.87.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

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, GitHub Security Advisory, a secondary CVSS source
Trending — Patch released this week

Also known asEUVD-2026-85187 (ENISA EUVD) · GHSA-hmfx-447r-rwh3 (GitHub Security Advisories)Source: ENISA EUVD

7.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — 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
7.8HIGHmedium confidence
EG Risk
35
EG Risk 35/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity78% × 45%
Impact severity (EG Severity): CVSS 7.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
12th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (7.8): severity, escalated by confirmed exploitation. This CVE's 7.8 is its impact severity (EG Severity), not escalated.

EG Severity
7.8 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS. FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

September 23, 2026

Last Modified

November 12, 2026

Advisory Details (4)

Auto-updated Sep 23, 2026
Patch available. Sources: redhat, github_commit.
Web page

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
Red Hat

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

Patch Availability(4)

Vendor / EcosystemFix (by version range) / PatchReleasedSource
redhatemacs-1:29.4-17.el10_32026-11-11redhat
redhatemacs-1:26.1-15.el8_10.42026-10-27redhat
redhatemacs-1:29.4-14.el10_2.32026-10-19redhat
redhatemacs-1:27.2-18.el9_8.32026-10-19redhat

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)
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.

Additional Vendor Advisories

(1)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 15× in last 7d / 58× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed its CVE.org record (CNA or CISA ADP). An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 186 rows on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. None are among the latest 100 rows. The 86 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-12 16:35 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-11-12 06:28 UTCEchelonGraph re-scored
  3. 2026-11-12 06:28 UTCVendor advisory
  4. 2026-11-12 06:28 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  5. 2026-11-12 05:33 UTCEchelonGraph re-scored
  6. 2026-11-12 05:33 UTCVendor advisory
  7. 2026-11-12 05:33 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-11-11 16:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-11-11 13:28 UTCEchelonGraph re-scored
  10. 2026-11-11 13:28 UTCVendor advisory
  11. 2026-11-11 13:28 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  12. 2026-11-11 12:59 UTCEchelonGraph re-scored
  13. 2026-11-11 12:59 UTCVendor advisory
  14. 2026-11-11 12:59 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-11-10 16:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  16. 2026-11-09 16:36 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  17. 2026-11-08 16:41 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-11-07 16:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  19. 2026-11-06 16:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  20. 2026-11-05 16:39 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  21. 2026-11-05 01:27 UTCEchelonGraph re-scored
  22. 2026-11-05 01:27 UTCVendor advisory
  23. 2026-11-05 01:27 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-11-05 00:25 UTCEchelonGraph re-scored
  25. 2026-11-05 00:25 UTCVendor advisory
Show 75 more
  1. 2026-11-05 00:25 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  2. 2026-11-04 16:37 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  3. 2026-11-03 16:49 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  4. 2026-11-02 16:46 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  5. 2026-11-02 11:42 UTCEchelonGraph re-scored
  6. 2026-11-02 11:42 UTCVendor advisory
  7. 2026-11-02 11:42 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-11-01 16:36 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  9. 2026-10-31 16:33 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  10. 2026-10-30 16:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  11. 2026-10-29 16:34 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  12. 2026-10-28 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  13. 2026-10-27 22:28 UTCEchelonGraph re-scored
  14. 2026-10-27 22:28 UTCVendor advisory
  15. 2026-10-27 22:27 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  16. 2026-10-27 21:59 UTCEchelonGraph re-scored
  17. 2026-10-27 21:59 UTCVendor advisory
  18. 2026-10-27 21:59 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  19. 2026-10-27 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  20. 2026-10-26 16:33 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  21. 2026-10-25 16:34 UTCEPSS rescoreEPSS 0.2% · 9th percentile
  22. 2026-10-25 13:48 UTCEchelonGraph re-scored
  23. 2026-10-24 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  24. 2026-10-23 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  25. 2026-10-23 12:34 UTCEchelonGraph re-scored
  26. 2026-10-23 12:34 UTCVendor advisory
  27. 2026-10-23 12:33 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  28. 2026-10-22 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  29. 2026-10-21 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  30. 2026-10-20 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  31. 2026-10-20 00:25 UTCEchelonGraph re-scored
  32. 2026-10-20 00:25 UTCVendor advisory
  33. 2026-10-20 00:25 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  34. 2026-10-19 23:18 UTCEchelonGraph re-scored
  35. 2026-10-19 23:18 UTCVendor advisory
  36. 2026-10-19 23:18 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  37. 2026-10-19 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  38. 2026-10-19 05:26 UTCEchelonGraph re-scored
  39. 2026-10-19 05:26 UTCVendor advisory
  40. 2026-10-19 05:26 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  41. 2026-10-19 04:44 UTCEchelonGraph re-scored
  42. 2026-10-19 04:44 UTCVendor advisory
  43. 2026-10-19 04:43 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  44. 2026-10-18 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  45. 2026-10-18 02:57 UTCEchelonGraph re-scored
  46. 2026-10-17 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  47. 2026-10-16 16:45 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  48. 2026-10-15 16:33 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  49. 2026-10-14 16:34 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  50. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  51. 2026-10-13 04:08 UTCEchelonGraph re-scored
  52. 2026-10-13 04:08 UTCVendor advisory
  53. 2026-10-13 04:08 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  54. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  55. 2026-10-12 14:40 UTCEchelonGraph re-scored
  56. 2026-10-11 21:33 UTCVendor advisory
  57. 2026-10-11 21:33 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  58. 2026-10-11 19:11 UTCEchelonGraph re-scored
  59. 2026-10-11 16:27 UTCEchelonGraph re-scored
  60. 2026-10-11 13:50 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  61. 2026-10-11 13:39 UTCEchelonGraph re-scored
  62. 2026-10-11 08:41 UTCEchelonGraph re-scored
  63. 2026-10-11 08:41 UTCVendor advisory
  64. 2026-10-11 08:41 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  65. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  66. 2026-10-10 19:59 UTCVendor advisory
  67. 2026-10-10 19:59 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  68. 2026-10-10 07:19 UTCEchelonGraph re-scored
  69. 2026-10-10 07:19 UTCVendor advisory
  70. 2026-10-10 07:19 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  71. 2026-10-09 20:08 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  72. 2026-10-09 18:38 UTCVendor advisory
  73. 2026-10-09 18:37 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8
  74. 2026-10-09 05:49 UTCVendor advisory
  75. 2026-10-09 05:49 UTCGHSA enrichmentGHSA-hmfx-447r-rwh3 · GitHub severity HIGH · GitHub CVSS 7.8

Frequently asked(5)

What is CVE-2026-96442?
CVE-2026-96442 is a high-severity vulnerability; its CVE record was 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 made public?
CVE-2026-96442 was made public on September 14, 2026: that is the date its CVE record's CNA, Red Hat, Inc., gives for when the vulnerability was made public. The CVE record itself was published on September 23, 2026. EchelonGraph's copy of the record carries a last-modified date of November 12, 2026; the record at its source may have been updated since.
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 (12th 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?
A fix for CVE-2026-96442 is available: update to the fixed version the vendor names in its advisory. 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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