Cyber Resilience

CVE-2026-5166

CriticalUpdated

Published: 29 April 2026

Published
29 April 2026
Modified
06 June 2026
KEV Added
Patch
CVSS Score v3.1 9.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.0033 24.5th percentile
Risk Priority 70 floored blend · peak EPSS

Summary

CVE-2026-5166 is a critical-severity Path Traversal (CWE-22) vulnerability in Gov (inferred from references). Its CVSS base score is 9.6 (Critical).

Operationally, ranked at the 24.5th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog.

The strongest mitigations our analysis identified are NIST 800-53 SI-10 (Information Input Validation) and SI-2 (Flaw Remediation).

Deeper analysis

CVE-2026-5166 is an Improper Limitation of a Pathname to a Restricted Directory vulnerability, classified under CWE-22 as a Path Traversal issue, affecting the Pardus Software Center developed by TUBITAK BILGEM Software Technologies Research Institute. This flaw impacts versions of Pardus Software Center prior to 1.0.3. The vulnerability has a CVSS v3.1 base score of 9.6, reflecting its critical severity due to network accessibility, low attack complexity, no required privileges, user interaction dependency, high scope change, and high impacts on confidentiality, integrity, and availability.

A remote attacker with no privileges can exploit this vulnerability by tricking a user into performing an action, such as interacting with a maliciously crafted input or file, leading to path traversal. Successful exploitation allows the attacker to access restricted directories, potentially resulting in high-impact data exposure, modification, or disruption across the affected scope.

The Turkish National Cyber Incident Response Center (USOM) has issued an advisory on this vulnerability, available at https://www.usom.gov.tr/bildirim/tr-26-0131, which security practitioners should consult for detailed mitigation guidance. Updating to Pardus Software Center version 1.0.3 or later addresses the issue in affected systems.

OWASP Top 10 for Web (2025)

EU & UK References

Vulnerability details

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus Software Center allows Path Traversal. This issue affects Pardus Software Center: before 0.6.4.

CWE(s)

Related Threats

MITRE ATT&CK Enterprise TechniquesAI

Insufficient information to map techniques.
Confidence: LOW · MITRE ATT&CK Enterprise v19.0

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CVE-2026-44243Shared CWE-22
CVE-2025-2505Shared CWE-22
CVE-2026-4350Shared CWE-22
CVE-2026-5841Shared CWE-22
CVE-2026-33242Shared CWE-22

Affected Assets

Gov
inferred from references and description; NVD did not file a CPE for this CVE

Mitigating Controls

Mitigating Controls (NIST 800-53 r5) AI

prevent

Directly addresses path traversal by requiring validation of pathname inputs to ensure they remain within restricted directories.

prevent

Mandates timely remediation of the specific flaw in Pardus Software Center prior to version 1.0.3 via patching to eliminate the vulnerability.

prevent

Enforces access control policies to limit unauthorized access to restricted directories targeted by path traversal exploits.

References