CVE-2026-41106
CVE-2026-41106 is a critical-severity vulnerability in Microsoft 365 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-601.
Key facts
- Severity: Critical (CVSS 3.x base score 9.3)
- EPSS exploit prediction: 1% (42nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-601
- Affected product: Microsoft 365 Copilot
- Published:
- Last modified:
Description
Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
Frequently asked questions
- What is CVE-2026-41106?
- Url redirection to untrusted site ('open redirect') in M365 Copilot allows an unauthorized attacker to elevate privileges over a network.
- How severe is CVE-2026-41106?
- CVE-2026-41106 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 user interaction. Impact on confidentiality is high, integrity high, and availability none.
- Is CVE-2026-41106 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-41106?
- CVE-2026-41106 affects Microsoft 365 Copilot. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-41106?
- 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.
- When was CVE-2026-41106 published?
- CVE-2026-41106 was published on 2026-07-02 and last updated on 2026-07-07.
References
Affected products (1)
- cpe:2.3:a:microsoft:365_copilot:-:*:*:*:*:*:*:*
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Other CWE-601 (Open Redirect) vulnerabilities
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