CVE-2026-24301

HIGHPre-NVD 8.88.8—
EchelonGraph scoreHIGH confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-18. the CNA's CVSS baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
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: 2%CVSS: 8.8Exploit: None knownExposed: 0

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

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

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%
Exploitation2% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
74%
KEV
Not listed

Published

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 18, 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-2026-24301

Vendor Advisories for CVE-2026-24301(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.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 47× in last 7d / 47× 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. 2026-08-20 22:55 UTCEPSS rescore
  2. 2026-08-20 22:08 UTCVendor advisory
  3. 2026-08-20 22:08 UTCGHSA enrichment
  4. 2026-08-20 21:57 UTCVendor advisory
  5. 2026-08-20 21:57 UTCGHSA enrichment
  6. 2026-08-20 16:38 UTCVendor advisory
  7. 2026-08-20 16:38 UTCGHSA enrichment
  8. 2026-08-20 14:57 UTCVendor advisory
  9. 2026-08-20 14:57 UTCGHSA enrichment
  10. 2026-08-20 14:08 UTCEG score recompute
  11. 2026-08-20 14:08 UTCVendor advisory
  12. 2026-08-20 14:08 UTCGHSA enrichment
  13. 2026-08-20 12:40 UTCEG score recompute
  14. 2026-08-20 12:40 UTCVendor advisory
  15. 2026-08-20 12:40 UTCGHSA enrichment
  16. 2026-08-20 08:39 UTCVendor advisory
  17. 2026-08-20 08:39 UTCGHSA enrichment
  18. 2026-08-19 21:28 UTCVendor advisory
  19. 2026-08-19 21:28 UTCGHSA enrichment
  20. 2026-08-19 21:05 UTCVendor advisory
  21. 2026-08-19 21:05 UTCGHSA enrichment
  22. 2026-08-19 17:28 UTCEG score recompute
  23. 2026-08-19 17:28 UTCVendor advisory
  24. 2026-08-19 17:28 UTCGHSA enrichment
  25. 2026-08-19 17:03 UTCEPSS rescore
Show 22 more
  1. 2026-08-19 16:45 UTCVendor advisory
  2. 2026-08-19 16:45 UTCGHSA enrichment
  3. 2026-08-19 15:22 UTCVendor advisory
  4. 2026-08-19 15:22 UTCGHSA enrichment
  5. 2026-08-19 15:09 UTCVendor advisory
  6. 2026-08-19 15:09 UTCGHSA enrichment
  7. 2026-08-19 14:27 UTCVendor advisory
  8. 2026-08-19 14:27 UTCGHSA enrichment
  9. 2026-08-19 09:50 UTCVendor advisory
  10. 2026-08-19 09:50 UTCGHSA enrichment
  11. 2026-08-18 22:39 UTCGHSA enrichment
  12. 2026-08-18 22:04 UTCGHSA enrichment
  13. 2026-08-18 17:26 UTCEG score recompute
  14. 2026-08-18 17:26 UTCVendor advisory
  15. 2026-08-18 17:26 UTCGHSA enrichment
  16. 2026-08-18 15:22 UTCEG score recompute
  17. 2026-08-18 15:22 UTCVendor advisory
  18. 2026-08-18 14:44 UTCEG score recompute
  19. 2026-08-18 14:44 UTCVendor advisory
  20. 2026-08-18 13:27 UTCEG score recompute
  21. 2026-08-18 13:27 UTCVendor advisory
  22. 2026-08-18 13:27 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-24301?
CVE-2026-24301 is a high vulnerability published on August 18, 2026. Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.
When was CVE-2026-24301 disclosed?
CVE-2026-24301 was first published in the National Vulnerability Database on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-24301 actively exploited?
CVE-2026-24301 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 25.7% of all scored CVEs.
What is the CVSS score of CVE-2026-24301?
CVE-2026-24301 has a CVSS v4.0 base score of 8.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-24301?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-24301, 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

Explore the affected products and dependency analysis for CVE-2026-24301

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