CVE-2025-1336

MediumPublic PoC

Published: 16 February 2025

Published

16 February 2025

Modified

28 February 2025

KEV Added

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Patch

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CVSS Score 4.3 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Score 0.0011 28.8th percentile

Risk Priority 9 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2025-1336 is a medium-severity Path Traversal (CWE-22) vulnerability in Cmseasy Cmseasy. Its CVSS base score is 4.3 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 28.8th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

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

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 1 other technique. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly mitigates path traversal in the imgname parameter by enforcing input validation mechanisms to restrict file paths to authorized directories.

SI-2 Flaw Remediation good match

prevent

Requires identification, reporting, and timely remediation of the path traversal flaw in deleteimg_action to eliminate the vulnerability.

AC-6 Least Privilege partial match

prevent

Enforces least privilege to restrict access to the vulnerable admin image deletion function, limiting exploitation to only necessary low-privilege users.

MITRE ATT&CK Enterprise TechniquesAI

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.

attack.mitre.org →

T1070.004 File Deletion Stealth

Adversaries may delete files left behind by the actions of their intrusion activity.

attack.mitre.org →

Why these techniques?

Path traversal vulnerability in public-facing CMS enables exploitation (T1190) and arbitrary file deletion for indicator removal (T1070.004).

NVD Description

A vulnerability has been found in CmsEasy 7.7.7.9 and classified as problematic. Affected by this vulnerability is the function deleteimg_action in the library lib/admin/image_admin.php. The manipulation of the argument imgname leads to path traversal. The attack can be launched remotely.…

The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Deeper analysisAI

CVE-2025-1336 is a path traversal vulnerability (CWE-22) affecting CmsEasy version 7.7.7.9. The issue resides in the deleteimg_action function within the library file lib/admin/image_admin.php, where the imgname argument can be manipulated to traverse directories outside the intended path. This vulnerability has a CVSS v3.1 base score of 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), classifying it as medium severity with low confidentiality impact and no impact on integrity or availability.

The vulnerability can be exploited remotely by an authenticated attacker with low privileges (PR:L), requiring only network access and low attack complexity. Successful exploitation allows the attacker to read arbitrary files on the server by leveraging the path traversal in the imgname parameter, potentially exposing sensitive configuration data, source code, or other files outside the web root.

Advisories from VulDB and a public GitHub disclosure detail the vulnerability, including a proof-of-concept exploit. The vendor was notified early but has not responded or issued a patch. Security practitioners should restrict access to the affected admin functionality, implement input validation and sanitization for file paths, and monitor for exploitation attempts using the disclosed PoC.