CVE-2025-59252
CVE-2025-59252 is a critical-severity vulnerability in Microsoft 365 Word Copilot with a CVSS 3.x base score of 9.3. 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: Critical (CVSS 3.x base score 9.3)
- EPSS exploit prediction: 1% (45th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-33549
- Weakness: CWE-77
- Affected product: Microsoft 365 Word Copilot
- Published:
- Last modified:
Description
Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose information over a network.
Frequently asked questions
- What is CVE-2025-59252?
- Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to disclose information over a network.
- How severe is CVE-2025-59252?
- CVE-2025-59252 has a CVSS 3.x base score of 9.3, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability none.
- Is CVE-2025-59252 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (45th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-59252?
- CVE-2025-59252 affects Microsoft 365 Word Copilot. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-59252?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2025-59252 have an EU (EUVD) identifier?
- Yes. CVE-2025-59252 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-33549.
- When was CVE-2025-59252 published?
- CVE-2025-59252 was published on 2025-10-09 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:365_word_copilot:-:*:*:*:*:*:*:*
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