CVE-2026-94284

MEDIUMPre-NVD 5.55.5—
EchelonGraph scoreHIGH confidence

Score 5.5 from GitHub Security Advisory published 2026-09-28. A secondary CVSS source baseline 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 5.5Exploit: None knownExposed services: Not assessed

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

An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

CVSS v3
5.5
EG Score
5.5MEDIUMhigh confidence
EG Risk
25
EG Risk 25/100CISA 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at every mission impact level.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
below the 1st
KEV
Not listed

CISA SSVCTrack at every mission impact level.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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 28, 2026

Last Modified

September 30, 2026

Advisory Details (1)

Auto-updated Sep 28, 2026
No patch confirmed yet.
generic

Fixes for AISLE reports (!310) · Merge requests · xorg / lib / libX11 · GitLab

https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/310/diffs?commit_id=1b7904002d212eed40949ccf4e8e7156f9fec0e2

Vendor Advisories for CVE-2026-94284(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 34× in last 7d / 34× 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 04:19 UTCEG score recompute
  2. 2026-10-04 04:19 UTCVendor advisory
  3. 2026-10-04 04:19 UTCGHSA enrichment
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-03 06:37 UTCEG score recompute
  6. 2026-10-03 06:37 UTCVendor advisory
  7. 2026-10-03 06:37 UTCGHSA enrichment
  8. 2026-10-02 17:57 UTCEPSS rescore
  9. 2026-10-02 08:54 UTCEG score recompute
  10. 2026-10-02 08:54 UTCVendor advisory
  11. 2026-10-02 08:54 UTCGHSA enrichment
  12. 2026-10-01 19:51 UTCEPSS rescore
  13. 2026-10-01 11:08 UTCEG score recompute
  14. 2026-10-01 11:08 UTCVendor advisory
  15. 2026-10-01 11:08 UTCGHSA enrichment
  16. 2026-09-30 15:04 UTCEPSS rescore
  17. 2026-09-30 13:24 UTCEG score recompute
  18. 2026-09-30 13:24 UTCVendor advisory
  19. 2026-09-30 13:24 UTCGHSA enrichment
  20. 2026-09-30 12:59 UTCEG score recompute
  21. 2026-09-30 12:59 UTCVendor advisory
  22. 2026-09-30 12:59 UTCGHSA enrichment
  23. 2026-09-29 22:12 UTCEG score recompute
  24. 2026-09-29 22:12 UTCVendor advisory
  25. 2026-09-29 22:12 UTCGHSA enrichment
Show 9 more
  1. 2026-09-29 07:14 UTCEG score recompute
  2. 2026-09-29 07:14 UTCVendor advisory
  3. 2026-09-29 07:14 UTCGHSA enrichment
  4. 2026-09-28 13:52 UTCEPSS rescore
  5. 2026-09-28 13:52 UTCEPSS rescore
  6. 2026-09-28 09:32 UTCEG score recompute
  7. 2026-09-28 09:32 UTCGHSA enrichment
  8. 2026-09-28 08:57 UTCEG score recompute
  9. 2026-09-28 08:57 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-94284?
CVE-2026-94284 is a medium vulnerability published on September 28, 2026. An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.
When was CVE-2026-94284 disclosed?
CVE-2026-94284 was first published on September 28, 2026, with the most recent update on September 30, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-94284 actively exploited?
CVE-2026-94284 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (below the 1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-94284?
CVE-2026-94284 has a CVSS base score of 5.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-94284?
No fix for CVE-2026-94284 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-94284 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-94284

Explore →

Is Your Infrastructure Affected by CVE-2026-94284?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs