CVE-2025-59272: Microsoft Copilot Information Disclosure Vulnerability
CVE-2025-59272 is a spoofing vulnerability in Microsoft Copilot, rated Critical by Microsoft, with a CVSS 3.1 base score of 9.3 (Critical). An attacker can exploit it remotely over the network, without any privileges and without user interaction. Microsoft has not reported exploitation in the wild and rates exploitation as less likely. The EPSS model estimates a 0.57% probability of exploitation activity in the next 30 days, higher than 47% of all scored vulnerabilities. Microsoft published it on 9 October 2025 in the October 2025 Patch Tuesday. It affects 1 product in 1 product family (Apps).
Key facts
- CVE ID
- CVE-2025-59272
- Severity
- Critical CVSS 9.3
- Microsoft severity
- Critical
- Impact
- Spoofing
- Exploited in the wild
- No
- Publicly disclosed
- No
- Exploitation likelihood
- Less Likely
- Weakness
- CWE-77
- EPSS
- 0.57% (percentile 47%)
- CISA KEV
- Not listed
- Released
- Last updated
- Patch Tuesday
- October 2025 Patch Tuesday
- Product families
- Apps
CVSS score and vector
Microsoft scores CVE-2025-59272 at 9.3 (temporal 8.1) using CVSS 3.1. Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N/E:U/RL:O/RC:C
| Metric | Value |
|---|---|
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Changed |
| Confidentiality impact | High |
| Integrity impact | Low |
| Availability impact | None |
| Exploit code maturity | Unproven |
| Remediation level | Official fix |
| Report confidence | Confirmed |
Description
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to perform information disclosure locally.
Frequently asked questions (Microsoft)
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency.
Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.
Affected products (1)
Apps
| Product | Security update | Type | Fixed build | Restart |
|---|---|---|---|---|
| Microsoft 365 Copilot's Business Chat |
NIST NVD data
- NVD status
- Modified
- NVD CVSS
- 9.3 (CRITICAL)
- NVD weakness
- CWE-77
- Published to NVD
- NVD last modified
Affected configurations (CPE)
| Product | Vulnerable versions |
|---|---|
| 365 copilot chat | all listed versions |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59272 (Vendor Advisory)
Acknowledgments
Revision history
| Version | Date | Description |
|---|---|---|
| 1.0 | Information published. | |
| 1.1 | Updated information to include CVSS scores. This is an informational change only. |