CVE-2026-62912: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-502) in Microsoft Exchange Server 2016 CU23 involves deserialization of untrusted data, which can be exploited by an authorized attacker to cause a denial of service (DoS) condition remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges, no user interaction, and impacts availability only. Microsoft has published an official fix for this issue.
Potential Impact
An authorized attacker can exploit this vulnerability to cause a denial of service on the affected Microsoft Exchange Server 2016 CU23, impacting the availability of the service. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62912 to remediate this vulnerability.
CVE-2026-62912: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Description
Deserialization of untrusted data in Microsoft Exchange Server allows an authorized attacker to deny service over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-502) in Microsoft Exchange Server 2016 CU23 involves deserialization of untrusted data, which can be exploited by an authorized attacker to cause a denial of service (DoS) condition remotely. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges, no user interaction, and impacts availability only. Microsoft has published an official fix for this issue.
Potential Impact
An authorized attacker can exploit this vulnerability to cause a denial of service on the affected Microsoft Exchange Server 2016 CU23, impacting the availability of the service. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62912 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-14T21:25:21.036Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62912","vendor":"Microsoft"}]
Threat ID: 6a7b5823bf8831d539156208
Added to database: 08/11/2026, 17:13:07 UTC
Last enriched: 08/11/2026, 20:57:26 UTC
Last updated: 08/12/2026, 01:41:06 UTC
Views: 6
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