Vulnerability details
CVE-2025-53782
Microsoft Exchange Server
Microsoft Exchange Server Elevation of Privilege Vulnerability
CVSS 3.1
8.4High
Official description
Incorrect implementation of authentication algorithm in Microsoft Exchange Server allows an unauthorized attacker to elevate privileges locally.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.4High | 3.1 | CVEProject cvelistV5 (CNA) (microsoft) | CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Microsoft | Microsoft Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 ≤ v < 15.01.2507.061 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 ≤ v < 15.02.1544.036 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 ≤ v < 15.02.1748.039 | CVEProject cvelistV5 (CNA) |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 ≤ v < 15.02.2562.029 | CVEProject cvelistV5 (CNA) |
References and advisories
1- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53782 vendor-advisorypatch
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Details
- Published
- 2025-10-14
- Last updated
- 2026-02-22
- State
- Published
- Assigner (CNA)
- microsoft
Exploit prediction (EPSS)
0.36%
Probability of exploitation in 30 days
30.5%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- None
- Technical impact
- Total
Weaknesses (CWE)
- CWE-303Incorrect Implementation of Authentication Algorithm