CVE-2026-62910: CWE-99: Improper Control of Resource Identifiers ('Resource Injection') in Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
Description
CVE-2026-62910 is a high-severity vulnerability in Microsoft Exchange Server 2016 Cumulative Update 23. It involves improper control of resource identifiers, also known as resource injection. This flaw allows an authorized attacker to elevate privileges over a network without requiring user interaction. An official fix is available to address this issue.
CVSS v3.1
Score 7.2high
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-62910 is a vulnerability classified under CWE-99 (Improper Control of Resource Identifiers) affecting Microsoft Exchange Server 2016 Cumulative Update 23 (version 15.01.0.0). The vulnerability enables an attacker with existing privileges to elevate their privileges remotely without user interaction. The CVSS v3.1 base score is 7.2, indicating high severity, with network attack vector, low attack complexity, high privileges required, no user interaction, and impacts on confidentiality, integrity, and availability. An official fix has been released by Microsoft to remediate this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability remotely to elevate privileges on the affected Microsoft Exchange Server 2016 Cumulative Update 23. This could lead to full compromise of the server's confidentiality, integrity, and availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available for this vulnerability. It is recommended to apply the Microsoft-provided patch for Exchange Server 2016 Cumulative Update 23 (version 15.01.0.0) to remediate this issue. No additional mitigation actions are specified by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Nationaal Cyber Security Centrum
- Advisory Id
- NCSC-2026-0289
- Cve Count
- 7
- Additional Cves
- ["CVE-2026-62912","CVE-2026-62913","CVE-2026-62914","CVE-2026-62915","CVE-2026-65813","CVE-2026-62911"]
- Remediation Level
- official-fix
- State
- PUBLISHED
Threat ID: 6a91a7c1acd9273b4906530e
Added to database: 08/28/2026, 15:22:41 UTC
Last enriched: 10/08/2026, 22:46:52 UTC
Last updated: 10/13/2026, 18:48:22 UTC
Views: 54
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