Authenticated privilege escalation
Published Aug 11, 2026 · Updated Aug 25, 2026
Privilege escalation in Microsoft Exchange Server allows remote authenticated users to gain elevated rights over a network. Microsoft describes the flaw only as improper control of resource identifiers, and public records do not identify the vulnerable Exchange component or the specific operation that accepts an attacker-supplied resource identifier. Reachability requires valid Exchange credentials on an affected on-premises server build, and the disclosed impact is bounded to privilege gain rather than unauthenticated access or published code execution.
Summary
What happened
Privilege escalation in Microsoft Exchange Server allows remote authenticated users to gain elevated rights over a network. Microsoft describes the flaw only as improper control of resource identifiers, and public records do not identify the vulnerable Exchange component or the specific operation that accepts an attacker-supplied resource identifier. Reachability requires valid Exchange credentials on an affected on-premises server build, and the disclosed impact is bounded to privilege gain rather than unauthenticated access or published code execution.
The record
- CVE
- CVE-2026-62910
- Published
- Aug 11, 2026
- Updated
- Aug 25, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-99, T1068
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 11, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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