CVE-2025-53779

high

Description

Relative path traversal in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

From the Tenable Blog

Microsoft’s August 2025 Patch Tuesday Addresses 107 CVEs (CVE-2025-53779)

Microsoft’s August 2025 Patch Tuesday Addresses 107 CVEs (CVE-2025-53779)

Published: 2025-08-12

Microsoft addresses 107 CVEs, including one zero-day vulnerability that was publicly disclosed.

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53779

https://www.infosecurity-magazine.com/news/microsoft-fixes-100-cves-august/

https://www.helpnetsecurity.com/2025/08/13/microsoft-fixes-badsuccessor-kerberos-vulnerability-cve-2025-53779/

https://cyberscoop.com/microsoft-patch-tuesday-august-2025/

https://www.tenable.com/blog/microsofts-august-2025-patch-tuesday-addresses-107-cves-cve-2025-53779

https://github.com/b-3llum/kerb-map

https://github.com/wnaspy/CVE-POC-WEAPON

https://github.com/b5null/Invoke-BadSuccessor.ps1

https://github.com/giriaryan694-a11y/exposed-win-zero-days

https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-24284

Details

Source: Mitre, NVD

Published: 2025-08-12

Updated: 2025-08-18

Named Vulnerability: BadSuccessor

Risk Information

CVSS v2

Base Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:M/C:C/I:C/A:C

Severity: High

CVSS v3

Base Score: 7.2

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Severity: High

EPSS

EPSS: 0.02695