CVE-2026-77910
Microsoft Exchange Server Elevation of Privilege Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 15.01.2507.077, 15.02.1544.050, 15.02.1748.055, 15.02.2562.056
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Incorrect authorization in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Timeline
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- CVE published
- Record last updated
Affected versions
- Microsoft Microsoft Exchange Server 2016 Cumulative Update 23
From 15.01.0.0 · fixed in 15.01.2507.077
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 14
From 15.02.0.0 · fixed in 15.02.1544.050
- Microsoft Microsoft Exchange Server 2019 Cumulative Update 15
From 15.02.0.0 · fixed in 15.02.1748.055
- Microsoft Microsoft Exchange Server Subscription Edition RTM
From 15.02.0.0 · fixed in 15.02.2562.056