Cyber Resilience

CVE-2025-53779

Path Traversal in Microsoft Windows Server 2025 ≤ 10.0.26100.4851

Published
12 August 2025
Modified
17 June 2026
Patch / advisory
CVSS Score v3.1 7.2
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.026 84th percentile
Risk Priority 60 floored blend · peak EPSS

Summary

CVE-2025-53779 is a high-severity Relative Path Traversal (CWE-23) vulnerability in Microsoft Windows Server 2025. Its CVSS base score is 7.2 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked in the top 16% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified map to SI-10 (Information Input Validation) and AC-3 (Access Enforcement) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

The vulnerability CVE-2025-53779 is a relative path traversal flaw, tracked under CWE-23, that resides in the Windows Kerberos component. It carries a CVSS 3.1 base score of 7.2 with network attack vector, low complexity, and high-privilege requirements.

An authorized attacker can exploit the issue remotely to elevate privileges on the target system, resulting in high impact to confidentiality, integrity, and availability.

Microsoft has published an advisory for the vulnerability at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53779. The EPSS score remains flat at 0.0623 with no material increase observed after disclosure.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability Data

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

CWE(s)

Related Threats

MITRE ATT&CK Enterprise Techniques

T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2026-50454Same product: Microsoft Windows Server 2025
CVE-2026-50426Same product: Microsoft Windows Server 2025
CVE-2026-40400Same product: Microsoft Windows Server 2025
CVE-2023-23379Same vendor: Microsoft
CVE-2026-56196Same vendor: Microsoft
CVE-2023-35359Same vendor: Microsoft
CVE-2025-62552Same vendor: Microsoft
CVE-2024-30010Same vendor: Microsoft
CVE-2024-43614Same vendor: Microsoft
CVE-2026-47287Same vendor: Microsoft

Affected Assets

microsoft
windows server 2025
≤ 10.0.26100.4851

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

Detect
Catch it (NIST detect / respond)

Harden
Shrink the surface (DISA STIG)

Validate
Prove the fix (OWASP ASVS)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

Explicit validation of path inputs stops .. sequences from ever being interpreted by the file system.

Access enforcement directly blocks unauthorized file reads/writes that result from unresolved .. sequences.

Information-flow rules can be configured to reject traversals that would move data outside an approved directory boundary.

Least privilege reduces the set of reachable files even when a traversal succeeds.

Secure-engineering principles require safe pathname construction and input neutralization before any file operation.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require input validation and path sanitization that prevent relative traversal.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

finds

Security testing in development catches path traversal via static/dynamic analysis, but does not itself implement the fix.

prevents

Secure development lifecycle mandates input validation and path-handling controls that directly prevent relative path traversal.

prevents

Application security requirements explicitly call for controls against path traversal and other injection flaws.

prevents

Secure architecture principles include directory isolation and canonicalization, reducing but not eliminating traversal risk.

prevents

Secure coding standards require neutralizing path traversal sequences, directly addressing CWE-23.

mitigates

Information access restriction limits which files can be reached, mitigating impact but not preventing the traversal flaw.

References