CVE-2025-53774
CVE-2025-53774 is a medium-severity vulnerability in Microsoft 365 Copilot Chat with a CVSS 3.x base score of 6.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-77.
Key facts
- Severity: Medium (CVSS 3.x base score 6.5)
- EPSS exploit prediction: 1% (44th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-23956
- Weakness: CWE-77
- Affected product: Microsoft 365 Copilot Chat
- Published:
- Last modified:
Description
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Frequently asked questions
- What is CVE-2025-53774?
- Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- How severe is CVE-2025-53774?
- CVE-2025-53774 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-53774 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-53774?
- CVE-2025-53774 affects Microsoft 365 Copilot Chat. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-53774?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-53774 have an EU (EUVD) identifier?
- Yes. CVE-2025-53774 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-23956.
- When was CVE-2025-53774 published?
- CVE-2025-53774 was published on 2025-08-07 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:365_copilot_chat:-:*:*:*:*:*:*:*
More vulnerabilities in Microsoft 365 Copilot Chat
- CVE-2026-26137 — Critical (CVSS 9.9): Server-side request forgery (ssrf) in Microsoft Exchange allows an authorized attacker to elevate privileges over a…
- CVE-2025-59286 — Critical (CVSS 9.3): Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…
- CVE-2025-59272 — Critical (CVSS 9.3): Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized…
- CVE-2025-53787 — High (CVSS 8.2): Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- CVE-2026-26164 — High (CVSS 7.5): Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an…
- CVE-2026-26129 — High (CVSS 7.5): Improper neutralization of special elements used in a command ('command injection') in M365 Copilot allows an…
All CVEs affecting Microsoft 365 Copilot Chat →
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