Vulnerability · Published Aug 18, 2026 · Assigned by microsoft
CVE-2026-24301Microsoft Copilot Information Disclosure Vulnerability
High 8.8
In plain English
A high-severity command injection in Copilot Web from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)1.1%top 33.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Copilot Web | - |
Weakness: CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
References
- Microsoft Copilot Information Disclosure Vulnerability vendor-advisory, patch