CVE-2026-20849

HIGH EPSS 57.6%
Published Jan 13, 20265mo ago · Modified Jun 17, 20262w ago
7.5 CVSS 3.1
High
Find Similar
Published Jan 13, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

Description

Reliance on untrusted inputs in a security decision in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

CVSS Details

Base Score
7.5
Exploitability
1.6
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
57.6% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-807

Affected Products 19

VendorProductVersionRange
microsoftwindows_10_1607* <10.0.14393.8783
microsoftwindows_10_1607* <10.0.14393.8783
microsoftwindows_10_1809* <10.0.17763.8276
microsoftwindows_10_1809* <10.0.17763.8276
microsoftwindows_10_21h2* <10.0.19044.6809
microsoftwindows_10_22h2* <10.0.19045.6809
microsoftwindows_11_23h2* <10.0.22631.6491
microsoftwindows_11_24h2* <10.0.26100.7623
microsoftwindows_11_25h2* <10.0.26200.7623
microsoftwindows_server_2008*any
microsoftwindows_server_2008*any
microsoftwindows_server_2008r2any
microsoftwindows_server_2012*any
microsoftwindows_server_2012r2any
microsoftwindows_server_2016* <10.0.14393.8783
microsoftwindows_server_2019* <10.0.17763.8276
microsoftwindows_server_2022* <10.0.20348.4648
microsoftwindows_server_2022_23h2* <10.0.25398.2092
microsoftwindows_server_2025* <10.0.26100.32230

References 1

  • msrc.microsoft.com https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20849
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.