CVE-2026-79992

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 2026-08-25. 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 — 4 sources updated this week
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: 0.1%CVSS: 7.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary code execution.

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 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 (value × EchelonGraph’s weight)
Severity78% × 45%
The EG Score, 7.8 of 10.
Exploitation0.1% × 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
0.1%
EPSS %ILE
3rd
KEV
Not listed

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.

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

August 25, 2026

Last Modified

October 12, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
Patch available. Sources: redhat.
Red Hat

2523665 – (CVE-2026-79992) CVE-2026-79992 emacs: local shell command injection through the user field in emacs tramp

https://bugzilla.redhat.com/show_bug.cgi?id=2523665
Red HatMentions a patch (unverified)

CVE-2026-79992 - 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-2026-79992

Vendor Advisories for CVE-2026-79992(3)

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 33× in last 7d / 169× 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 it from the CNA feed. 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). Most recent first.

Showing the most recent 100 of 264 refreshes 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 164 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-13 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  2. 2026-10-12 16:35 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  3. 2026-10-12 14:58 UTCEG score recompute
  4. 2026-10-12 08:26 UTCEG score recompute
  5. 2026-10-12 08:26 UTCVendor advisory
  6. 2026-10-12 08:26 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  7. 2026-10-12 08:08 UTCEG score recompute
  8. 2026-10-12 08:08 UTCVendor advisory
  9. 2026-10-12 08:08 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  10. 2026-10-12 05:26 UTCEG score recompute
  11. 2026-10-12 05:26 UTCVendor advisory
  12. 2026-10-12 05:26 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  13. 2026-10-12 04:41 UTCVendor advisory
  14. 2026-10-12 04:41 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-11 19:21 UTCEG score recompute
  16. 2026-10-11 18:31 UTCVendor advisory
  17. 2026-10-11 18:30 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  18. 2026-10-11 16:37 UTCEG score recompute
  19. 2026-10-11 13:56 UTCEG score recompute
  20. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  22. 2026-10-10 11:57 UTCEG score recompute
  23. 2026-10-10 11:57 UTCVendor advisory
  24. 2026-10-10 11:57 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  25. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
Show 75 more
  1. 2026-10-09 04:20 UTCEG score recompute
  2. 2026-10-09 04:20 UTCVendor advisory
  3. 2026-10-09 04:20 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  4. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  5. 2026-10-08 03:11 UTCEG score recompute
  6. 2026-10-08 03:11 UTCVendor advisory
  7. 2026-10-08 03:11 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  9. 2026-10-07 01:10 UTCEG score recompute
  10. 2026-10-07 01:10 UTCVendor advisory
  11. 2026-10-07 01:10 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  12. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  13. 2026-10-06 13:28 UTCVendor advisory
  14. 2026-10-06 13:28 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  15. 2026-10-06 02:31 UTCEG score recompute
  16. 2026-10-06 02:31 UTCVendor advisory
  17. 2026-10-06 02:31 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  18. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  19. 2026-10-05 12:36 UTCVendor advisory
  20. 2026-10-05 12:36 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  21. 2026-10-05 01:38 UTCEG score recompute
  22. 2026-10-05 01:38 UTCVendor advisory
  23. 2026-10-05 01:38 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  24. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  25. 2026-10-04 14:40 UTCVendor advisory
  26. 2026-10-04 14:40 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  27. 2026-10-04 03:23 UTCVendor advisory
  28. 2026-10-04 03:23 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  29. 2026-10-03 16:25 UTCEG score recompute
  30. 2026-10-03 16:25 UTCVendor advisory
  31. 2026-10-03 16:25 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  32. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-10-03 05:02 UTCVendor advisory
  34. 2026-10-03 05:01 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  35. 2026-10-02 17:57 UTCEG score recompute
  36. 2026-10-02 17:57 UTCVendor advisory
  37. 2026-10-02 17:57 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  38. 2026-10-02 17:57 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  39. 2026-10-02 07:01 UTCVendor advisory
  40. 2026-10-02 07:00 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  41. 2026-10-01 20:03 UTCEG score recompute
  42. 2026-10-01 20:03 UTCVendor advisory
  43. 2026-10-01 20:02 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  44. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.1% · 2nd percentile
  45. 2026-10-01 07:11 UTCVendor advisory
  46. 2026-10-01 07:11 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  47. 2026-09-30 20:14 UTCEG score recompute
  48. 2026-09-30 20:14 UTCVendor advisory
  49. 2026-09-30 20:14 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  50. 2026-09-30 06:44 UTCEG score recompute
  51. 2026-09-30 06:44 UTCVendor advisory
  52. 2026-09-30 06:44 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  53. 2026-09-29 15:24 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  54. 2026-09-29 08:26 UTCEG score recompute
  55. 2026-09-29 08:26 UTCVendor advisory
  56. 2026-09-29 08:25 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  57. 2026-09-28 21:28 UTCEG score recompute
  58. 2026-09-28 21:28 UTCVendor advisory
  59. 2026-09-28 21:28 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  60. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  61. 2026-09-28 06:53 UTCVendor advisory
  62. 2026-09-28 06:53 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  63. 2026-09-27 19:56 UTCEG score recompute
  64. 2026-09-27 19:56 UTCVendor advisory
  65. 2026-09-27 19:56 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  66. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  67. 2026-09-27 08:59 UTCVendor advisory
  68. 2026-09-27 08:59 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  69. 2026-09-26 22:02 UTCEG score recompute
  70. 2026-09-26 22:02 UTCVendor advisory
  71. 2026-09-26 22:02 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8
  72. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  73. 2026-09-26 00:28 UTCEPSS rescoreEPSS 0.2% · 8th percentile
  74. 2026-09-25 07:24 UTCVendor advisory
  75. 2026-09-25 07:24 UTCGHSA enrichmentGHSA-42vv-cfp2-9qc8 · GitHub severity HIGH · GitHub CVSS 7.8

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Frequently asked(5)

What is CVE-2026-79992?
CVE-2026-79992 is a high-severity vulnerability; its CVE record was published on August 25, 2026. A flaw was found in Emacs TRAMP. A local attacker could exploit this vulnerability by processing maliciously crafted filenames. This occurs because TRAMP concatenates login arguments without proper sanitization, which are then passed to a local shell. Successful exploitation could lead to arbitrary…
When was CVE-2026-79992 made public?
CVE-2026-79992 was made public on August 21, 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 August 25, 2026. EchelonGraph's copy of the record carries a last-modified date of October 12, 2026; the record at its source may have been updated since.
Is CVE-2026-79992 actively exploited?
CVE-2026-79992 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (3rd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-79992?
CVE-2026-79992 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-2026-79992?
A fix for CVE-2026-79992 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-79992 are linked in the Vendor Advisories panel on this page.

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