CVE-2026-24301CriticalRevised 25 Aug
Microsoft Copilot Information Disclosure Vulnerability
Assessment
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.
- Severity
- Critical
- CVSS base score
- 8.8CVSS:3.1/
AV:N/ AC:L/ PR:N/ UI:R/ S:U/ C:H/ I:H/ A:H/ E:U/ RL:O/ RC:C - Impact
- Information Disclosure
- EPSS, next 30 days
- 4.1%Higher than 90.4% of scored CVEs · FIRST model run 26 Sep 2026 · about EPSS
- Exploitability
- Not assessed
- Publicly disclosed
- No
- Customer action
- Not required (service-side fix)
- Component
- Microsoft Copilot
- Weakness
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
- Issued by
- Microsoft
- Published
- 18 Aug 2026 · August 2026
- Last revised
- 25 Aug 2026Acknowledgement Updated
Updates that fix it
0 KBsNo KB listed
MSRC lists no downloadable update, which usually means a service-side fix or a release-notes update. Check the MSRC advisory.
Affected products
Other1 affected product
- Copilot Web