CVE-2026-65374

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-09-14. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: None knownExposed: 0

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

A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious WebDAV server may result in code execution.

CVSS v3
8.8
EG Score
8.8(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
42%
KEV
Not listed

Published

September 14, 2026

Last Modified

September 16, 2026

Advisory Details (3)

Auto-updated Sep 15, 2026
No patch confirmed yet.
generic

About the security content of macOS Sequoia 15.8 - Apple Support

https://support.apple.com/en-us/149043
generic

About the security content of macOS Tahoe 26.7 - Apple Support

https://support.apple.com/en-us/149042
generic

About the security content of macOS Golden Gate 27 - Apple Support

https://support.apple.com/en-us/149035

Vendor Advisories for CVE-2026-65374(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 23× in last 7d / 46× 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 04:40 UTCGHSA enrichment
  2. 2026-09-24 16:01 UTCEG score recompute
  3. 2026-09-24 16:01 UTCGHSA enrichment
  4. 2026-09-24 03:23 UTCEG score recompute
  5. 2026-09-24 03:23 UTCGHSA enrichment
  6. 2026-09-23 17:54 UTCEPSS rescore
  7. 2026-09-23 14:43 UTCGHSA enrichment
  8. 2026-09-23 02:05 UTCEG score recompute
  9. 2026-09-23 02:05 UTCGHSA enrichment
  10. 2026-09-22 13:26 UTCGHSA enrichment
  11. 2026-09-22 00:46 UTCEG score recompute
  12. 2026-09-22 00:46 UTCGHSA enrichment
  13. 2026-09-21 12:08 UTCGHSA enrichment
  14. 2026-09-20 23:30 UTCEG score recompute
  15. 2026-09-20 23:30 UTCGHSA enrichment
  16. 2026-09-20 20:16 UTCEPSS rescore
  17. 2026-09-20 10:51 UTCGHSA enrichment
  18. 2026-09-19 22:12 UTCEG score recompute
  19. 2026-09-19 22:12 UTCGHSA enrichment
  20. 2026-09-19 09:33 UTCGHSA enrichment
  21. 2026-09-18 20:44 UTCEG score recompute
  22. 2026-09-18 20:44 UTCGHSA enrichment
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 08:04 UTCEG score recompute
  25. 2026-09-18 08:04 UTCGHSA enrichment
Show 21 more
  1. 2026-09-17 19:25 UTCGHSA enrichment
  2. 2026-09-17 06:41 UTCGHSA enrichment
  3. 2026-09-16 17:56 UTCEG score recompute
  4. 2026-09-16 17:56 UTCGHSA enrichment
  5. 2026-09-16 14:08 UTCEPSS rescore
  6. 2026-09-16 05:15 UTCEPSS rescore
  7. 2026-09-16 04:22 UTCGHSA enrichment
  8. 2026-09-16 01:02 UTCEG score recompute
  9. 2026-09-16 01:02 UTCGHSA enrichment
  10. 2026-09-15 15:31 UTCEG score recompute▲ 8.80
  11. 2026-09-15 15:31 UTCGHSA enrichment
  12. 2026-09-15 15:31 UTCNVD updateCVSS v3 → 8.8 · severity → HIGH
  13. 2026-09-15 14:58 UTCEG score recompute▼ 8.80
  14. 2026-09-15 14:58 UTCGHSA enrichment
  15. 2026-09-15 14:51 UTCNVD update
  16. 2026-09-15 14:33 UTCEG score recompute▲ 8.80
  17. 2026-09-15 14:33 UTCGHSA enrichment
  18. 2026-09-15 14:32 UTCMITRE cvelistV5CVSS v3 → 8.8 · severity → HIGH
  19. 2026-09-14 21:22 UTCNVD update
  20. 2026-09-14 20:58 UTCEG score recompute
  21. 2026-09-14 20:54 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-65374?
CVE-2026-65374 is a high vulnerability published on September 14, 2026. A memory corruption issue was addressed with improved validation. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. Connecting to a malicious WebDAV server may result in code execution.
When was CVE-2026-65374 disclosed?
CVE-2026-65374 was first published in the National Vulnerability Database on September 14, 2026, with the most recent update on September 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-65374 actively exploited?
CVE-2026-65374 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 57.8% of all scored CVEs.
What is the CVSS score of CVE-2026-65374?
CVE-2026-65374 has a CVSS v3.1 base score of 8.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-65374?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-65374, 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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