CVE-2026-45497
CVE-2026-45497 is a high-severity vulnerability in Microsoft Copilot with a CVSS 3.x base score of 7.7. 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: High (CVSS 3.x base score 7.7)
- EPSS exploit prediction: 0% (39th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-34335
- Weakness: CWE-77
- Affected product: Microsoft Copilot
- Published:
- Last modified:
Description
Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.
Frequently asked questions
- What is CVE-2026-45497?
- Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.
- How severe is CVE-2026-45497?
- CVE-2026-45497 has a CVSS 3.x base score of 7.7, rated high severity. It is exploitable over network with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
- Is CVE-2026-45497 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (39th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-45497?
- CVE-2026-45497 affects Microsoft Copilot. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-45497?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2026-45497 have an EU (EUVD) identifier?
- Yes. CVE-2026-45497 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-34335.
- When was CVE-2026-45497 published?
- CVE-2026-45497 was published on 2026-06-04 and last updated on 2026-07-23.
References
Affected products (1)
- cpe:2.3:a:microsoft:copilot:-:*:*:*:*:*:*:*
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