CVE-2026-62873: CWE-347: Improper Verification of Cryptographic Signature in Microsoft Microsoft 365 Admin Center
Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
AI Analysis
Technical Summary
This vulnerability involves improper verification of cryptographic signatures within the Microsoft 365 Admin Center, enabling an unauthorized attacker to elevate privileges remotely. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) reflects that the attack can be performed over the network with low complexity, no privileges or user interaction required, and results in high impact on confidentiality, integrity, and availability. No specific affected versions or patch details are disclosed in the provided data.
Potential Impact
An attacker exploiting this vulnerability can gain elevated privileges in the Microsoft 365 Admin Center remotely, potentially compromising the confidentiality, integrity, and availability of the affected system. This could lead to unauthorized administrative control over the environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
CVE-2026-62873: CWE-347: Improper Verification of Cryptographic Signature in Microsoft Microsoft 365 Admin Center
Description
Improper verification of cryptographic signature in Microsoft 365 Admin Center allows an unauthorized attacker to elevate privileges over a network.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper verification of cryptographic signatures within the Microsoft 365 Admin Center, enabling an unauthorized attacker to elevate privileges remotely. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) reflects that the attack can be performed over the network with low complexity, no privileges or user interaction required, and results in high impact on confidentiality, integrity, and availability. No specific affected versions or patch details are disclosed in the provided data.
Potential Impact
An attacker exploiting this vulnerability can gain elevated privileges in the Microsoft 365 Admin Center remotely, potentially compromising the confidentiality, integrity, and availability of the affected system. This could lead to unauthorized administrative control over the environment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or workaround information is provided in the available data.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-c89r-fxpx-x3w6
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-62873"]
- Ecosystems
- []
- Database Specific Severity
- CRITICAL
- Cvss Version
- 3.1
- Remediation Level
- official-fix
- Is Cloud Service
- true
Threat ID: 6a75739abf8831d539d91b72
Added to database: 08/07/2026, 05:56:42 UTC
Last enriched: 08/07/2026, 07:26:05 UTC
Last updated: 08/08/2026, 03:40:59 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.