CVE-2026-62873
CVE-2026-62873 is a critical-severity vulnerability in Microsoft Windows Admin Center with a CVSS 3.x base score of 9.8. 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-347.
Key facts
- Severity: Critical (CVSS 3.x base score 9.8)
- EPSS exploit prediction: 0% (27th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-347
- Affected product: Microsoft Windows Admin Center
- Published:
- Last modified:
Description
Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
Frequently asked questions
- What is CVE-2026-62873?
- Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
- How severe is CVE-2026-62873?
- CVE-2026-62873 has a CVSS 3.x base score of 9.8, 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 high, and availability high.
- Is CVE-2026-62873 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (27th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-62873?
- CVE-2026-62873 affects Microsoft Windows Admin Center. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-62873?
- 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-2026-62873 published?
- CVE-2026-62873 was published on 2026-08-07.
References
Affected products (1)
- cpe:2.3:a:microsoft:windows_admin_center:-:*:*:*:*:*:*:*
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