CVE-2026-58691

HIGHPre-NVD 8.48.4—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.4 under CISA-ADP (Vulnrichment) CVSS v3.1 (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 99% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.4EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.4Exploit: None knownExposed: 0

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

In FsmReleaseKey of fsm.c, there is a possible permission bypass due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.

CVSS v3
8.4
EG Score
8.4(medium)
EG Risk
38(Track)
EG Risk 38/100SSVC: 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
Severity84% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

September 15, 2026

Last Modified

September 18, 2026

Advisory Details (1)

Auto-updated Sep 16, 2026
No patch confirmed yet.
generic

Pixel Update Bulletin—September 2026  |  Android Open Source Project

https://source.android.com/docs/security/bulletin/pixel/2026/2026-09-01

Vendor Advisories for CVE-2026-58691(1)

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 20× in last 7d / 40× 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. 2026-09-25 03:36 UTCGHSA enrichment
  2. 2026-09-24 14:46 UTCEG score recompute
  3. 2026-09-24 14:46 UTCGHSA enrichment
  4. 2026-09-24 14:04 UTCEPSS rescore
  5. 2026-09-24 01:55 UTCEG score recompute
  6. 2026-09-24 01:55 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 13:05 UTCGHSA enrichment
  9. 2026-09-23 00:15 UTCGHSA enrichment
  10. 2026-09-22 11:24 UTCGHSA enrichment
  11. 2026-09-21 22:34 UTCGHSA enrichment
  12. 2026-09-21 09:44 UTCGHSA enrichment
  13. 2026-09-20 20:54 UTCGHSA enrichment
  14. 2026-09-20 08:04 UTCGHSA enrichment
  15. 2026-09-19 19:14 UTCEG score recompute
  16. 2026-09-19 19:13 UTCGHSA enrichment
  17. 2026-09-19 06:18 UTCEG score recompute
  18. 2026-09-19 06:18 UTCGHSA enrichment
  19. 2026-09-18 19:28 UTCEPSS rescore
  20. 2026-09-18 17:28 UTCGHSA enrichment
  21. 2026-09-18 08:08 UTCEG score recompute
  22. 2026-09-18 08:08 UTCGHSA enrichment
  23. 2026-09-17 19:31 UTCEPSS rescore
  24. 2026-09-17 19:18 UTCGHSA enrichment
  25. 2026-09-17 04:21 UTCGHSA enrichment
Show 15 more
  1. 2026-09-17 04:06 UTCGHSA enrichment
  2. 2026-09-16 19:34 UTCGHSA enrichment
  3. 2026-09-16 17:48 UTCGHSA enrichment
  4. 2026-09-16 16:54 UTCEG score recompute▲ 0.60
  5. 2026-09-16 16:54 UTCGHSA enrichment
  6. 2026-09-16 16:19 UTCMITRE cvelistV5CVSS v3 → 8.4
  7. 2026-09-16 14:25 UTCEG score recompute
  8. 2026-09-16 14:25 UTCGHSA enrichment
  9. 2026-09-16 14:08 UTCEPSS rescore
  10. 2026-09-16 13:27 UTCEG score recompute▲ 7.80
  11. 2026-09-16 13:27 UTCGHSA enrichment
  12. 2026-09-16 13:25 UTCMITRE cvelistV5CVSS v3 → 7.8 · severity → HIGH
  13. 2026-09-15 19:32 UTCNVD update
  14. 2026-09-15 18:38 UTCEG score recompute
  15. 2026-09-15 18:37 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-58691?
CVE-2026-58691 is a high vulnerability published on September 15, 2026. In FsmReleaseKey of fsm.c, there is a possible permission bypass due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
When was CVE-2026-58691 disclosed?
CVE-2026-58691 was first published in the National Vulnerability Database on September 15, 2026, with the most recent update on September 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-58691 actively exploited?
CVE-2026-58691 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 99.1% of all scored CVEs.
What is the CVSS score of CVE-2026-58691?
CVE-2026-58691 has a CVSS v3.1 base score of 8.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-58691?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-58691, 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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