CVE-2025-59286 Copilot Information Disclosure Vulnerability
An unauthorized attacker can exploit command injection in Microsoft 365 Copilot to disclose sensitive information over the network.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-59286?
CVE-2025-59286 is a critical command injection vulnerability in Microsoft 365 Copilot's Business Chat, published on 9 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose information over a network.
Weakness: CWE-77
Which versions are affected by CVE-2025-59286?
It affects 1 product.
Products include Microsoft 365 Copilot Chat.
How do I fix CVE-2025-59286?
No fix has been published for CVE-2025-59286 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2025-59286 being exploited?
There is no known exploitation of CVE-2025-59286 in the wild and no public exploit code.
Other vulnerabilities in Microsoft 365 Copilot's Business Chat
- CVE-2026-26137 Microsoft Exchange Elevation of Privilege Vulnerability
- CVE-2025-59272 Copilot Information Disclosure Vulnerability
- CVE-2026-78501 Microsoft 365 Copilot Business Chat Information Disclosure Vulnerability
- CVE-2025-53787 Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- CVE-2026-26129 M365 Copilot Information Disclosure Vulnerability
Sources
Also known as GHSA-hh8r-hx5c-8r8r.