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% (41st 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% (41st 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:-:*:*:*:*:*:*:*
More vulnerabilities in Microsoft 365 Word Copilot
- CVE-2026-21521 — High (CVSS 7.4): Improper neutralization of escape, meta, or control sequences in Copilot allows an unauthorized attacker to disclose…
All CVEs affecting Microsoft 365 Word Copilot →
Other CWE-77 (Command Injection) vulnerabilities
- CVE-2026-23652 — Critical (CVSS 10.0): Improper neutralization of special elements used in a command ('command injection') in Microsoft Power Pages allows an…
- CVE-2025-59818 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute arbitrary commands on the underlying system using the file…
- CVE-2025-64093 — Critical (CVSS 10.0): Remote Code Execution vulnerability that allows unauthenticated attackers to inject arbitrary commands into the…
- CVE-2025-64090 — Critical (CVSS 10.0): This vulnerability allows authenticated attackers to execute commands via the hostname of the device.
- CVE-2025-61492 — Critical (CVSS 10.0): A command injection vulnerability in the execute_command function of terminal-controller-mcp 0.1.7 allows attackers to…
- CVE-2025-10035 — Critical (CVSS 10.0): A deserialization vulnerability in the License Servlet of Fortra's GoAnywhere MFT allows an actor with a validly forged…