🛡️ CVE-2025-59286 — 365-copilot-chat

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality high, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N

• Attack vector: Network — reachable from anywhere that can route to the service.
• Attack complexity: Low — the attack works reliably, with no preparation.
• Privileges required: None — an unauthenticated stranger can try it.
• User interaction: None — nobody has to be tricked into anything.
• Scope: Changed — a successful attack reaches components beyond the vulnerable one.
• Confidentiality impact: High — total loss, or loss the attacker controls.
• Integrity impact: Low — limited, and the attacker does not choose what is affected.
• Availability impact: None.

Weakness class

CVE-2025-59286 is classified as CWE-77: Command Injection. User input is placed into a command that the system interprets, allowing extra commands to be appended to the intended one.

Affected software

CVE-2025-59286 is recorded against 1 package.

• 365-copilot-chat

Timeline and source

Published on 9 October 2025 and last revised on 17 June 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

msrc.microsoft.com

Other advisories for this package

365-copilot-chat has other advisories on record. If you are patching this one, these are worth checking on the same host:

• CVE-2026-26164 (7.5 High, published 7 May 2026)
• CVE-2026-26129 (7.5 High, published 7 May 2026)
• CVE-2026-26137 (9.9 Critical, published 19 Mar 2026)
• CVE-2025-59272 (9.3 Critical, published 9 Oct 2025)
• CVE-2025-53787 (8.2 High, published 7 Aug 2025)
• CVE-2025-53774 (6.5 Medium, published 7 Aug 2025)

Same weakness in other software

These advisories are the same class of weakness (CWE-77: Command Injection) in other software:

• CVE-2025-29296 (9.8 Critical, published 4 Aug 2026)
• CVE-2024-58354 (9.9 Critical, published 23 Jul 2026)
• CVE-2014-6633 (8.0 High, published 9 Jul 2026)
• CVE-2023-1000 (6.3 Medium, published 7 Jul 2026)
• CVE-2024-29640 (8.0 High, published 7 Jul 2026)
• CVE-2023-39523 (6.8 Medium, published 7 Jul 2026)
• CVE-2025-4032 (2.0 Low, published 7 Jul 2026)
• CVE-2022-42906 (8.0 High, published 7 Jul 2026)

Details

Affected Packages

References