CVE-2026-96940

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-10-02. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 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: 0.5%CVSS: 8.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.

CVSS v3
8.8
EG Score
8.8HIGHhigh confidence
EG Risk
40
EG Risk 40/100CISA 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
Severity88% × 45%
Exploitation1% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

CISA SSVCTrack 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). 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

October 2, 2026

Last Modified

October 3, 2026

Advisory Details (1)

Auto-updated Oct 2, 2026
Patch available. Sources: microsoft.
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96940

Vendor Advisories for CVE-2026-96940(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 27× in last 7d / 27× 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. 2026-10-05 03:08 UTCEG score recompute
  2. 2026-10-05 03:08 UTCVendor advisory
  3. 2026-10-05 03:08 UTCGHSA enrichment
  4. 2026-10-04 23:23 UTCEPSS rescore
  5. 2026-10-04 15:26 UTCVendor advisory
  6. 2026-10-04 15:26 UTCGHSA enrichment
  7. 2026-10-04 03:43 UTCVendor advisory
  8. 2026-10-04 03:43 UTCGHSA enrichment
  9. 2026-10-03 16:01 UTCEG score recompute
  10. 2026-10-03 16:01 UTCVendor advisory
  11. 2026-10-03 16:01 UTCGHSA enrichment
  12. 2026-10-03 14:26 UTCEPSS rescore
  13. 2026-10-03 04:20 UTCEG score recompute
  14. 2026-10-03 04:20 UTCVendor advisory
  15. 2026-10-03 04:20 UTCGHSA enrichment
  16. 2026-10-03 04:00 UTCEG score recompute
  17. 2026-10-03 04:00 UTCVendor advisory
  18. 2026-10-03 04:00 UTCGHSA enrichment
  19. 2026-10-02 21:22 UTCEG score recompute
  20. 2026-10-02 21:22 UTCVendor advisory
  21. 2026-10-02 20:30 UTCEG score recompute
  22. 2026-10-02 20:30 UTCVendor advisory
  23. 2026-10-02 19:20 UTCEG score recompute
  24. 2026-10-02 19:20 UTCVendor advisory
  25. 2026-10-02 19:10 UTCEG score recompute
Show 2 more
  1. 2026-10-02 19:10 UTCVendor advisory
  2. 2026-10-02 19:10 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-96940?
CVE-2026-96940 is a high vulnerability published on October 2, 2026. Weak authorization in Microsoft Exchange Server allows an authenticated attacker to elevate privileges over a network.
When was CVE-2026-96940 disclosed?
CVE-2026-96940 was first published on October 2, 2026, with the most recent update on October 3, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-96940 actively exploited?
CVE-2026-96940 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-96940?
CVE-2026-96940 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-96940?
A fix for CVE-2026-96940 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-96940 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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