M365 Copilot Information Disclosure Vulnerability

published 2025-06-11 16 mo ago modified 2026-11-03 5 d ago also EUVD-2025-18114

cvss: 9.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 7.2%; EPSS 7.2% chance of exploitation in 30 days, percentile 94%
public exploits: 0; none known

Ai command injection in M365 Copilot allows an unauthorized attacker to disclose information over a network.

Patch / fix

links 1

msrc.microsoft.com/update-guide/vulnerability/CVE-2025-32711 advisory

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: total
Assessed: 16 mo ago (2025-06-14)

Exploit prediction

7.17% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	9.3	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
CNA	3.1	9.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected products

Microsoft Microsoft 365 Copilot

Classification

Weakness

CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component

References

msrc.microsoft.com /update-guide/vulnerability/CVE-2025-32711
vendor-advisory, patch
aim.security /lp/aim-labs-echoleak-m365

Sources

CVE List CVE-2025-32711
NVD CVE-2025-32711

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary