CVE-2026-118157 json
Microsoft Exchange Server Elevation of Privilege Vulnerability
published yesterday modified 17h ago also EUVD-2026-122246
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
Weak authentication in Microsoft Exchange Server allows an authorized attacker to elevate privileges over a network.
Patch / fix
- Microsoft Microsoft Exchange Server Subscription Edition RTM 15.02.2562.057
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- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- yesterday
Exploit prediction
1.00% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C |
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
Affected products
- Microsoft Microsoft Exchange Server Subscription Edition RTM
Classification
- Weakness
-
- CWE-1390 Weak Authentication
- Technology feeds
References
-
msrc.microsoft.com
/update-guide/vulnerability/CVE-2026-118157
vendor-advisory, patch
Sources
- CVE List CVE-2026-118157
- NVD CVE-2026-118157
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