CVE-2025-61168

CriticalRCE

Published: 25 November 2025

Published

25 November 2025

Modified

01 December 2025

KEV Added

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Patch

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CVSS Score 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Score 0.0017 37.5th percentile

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

Summary

CVE-2025-61168 is a critical-severity Deserialization of Untrusted Data (CWE-502) vulnerability in Sigb Pmb. Its CVSS base score is 9.8 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 37.5th 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).

Threat & Defense at a Glance

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

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-2 Flaw Remediation good match

prevent

Remediating the deserialization flaw in cms_rest.php via timely patching directly eliminates the arbitrary code execution vulnerability.

SI-10 Information Input Validation good match

prevent

Validating and sanitizing inputs to cms_rest.php prevents untrusted serialized data from being processed and triggering code execution.

SI-16 Memory Protection partial match

prevent

Memory protection mechanisms like ASLR and DEP mitigate arbitrary code execution even if deserialization occurs.

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 →

Why these techniques?

The vulnerability allows unauthenticated remote code execution via deserialization in a public-facing web application component (cms_rest.php), directly mapping to exploitation of public-facing applications.

Confidence: HIGH · MITRE ATT&CK Enterprise v19.0

NVD Description

An issue in the cms_rest.php component of SIGB PMB v8.0.1.14 allows attackers to execute arbitrary code via unserializing an arbitrary file.

Deeper analysisAI

CVE-2025-61168 is a critical vulnerability in the cms_rest.php component of SIGB PMB version 8.0.1.14. The issue stems from improper handling of unserialization, allowing attackers to execute arbitrary code by unserializing a maliciously crafted file. It is classified under CWE-502 (Deserialization of Untrusted Data) and carries a CVSS v3.1 base score of 9.8 (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H), reflecting its high severity due to network accessibility and comprehensive impact.

Remote attackers require no authentication, privileges, or user interaction to exploit this flaw over the network with low attack complexity. Successful exploitation enables full arbitrary code execution on the server, compromising confidentiality, integrity, and availability with unchanged scope.

Advisories and patch information are detailed in the SIGB PMB changelog at https://forge.sigb.net/projects/pmb/wiki/Changelog_801#S%C3%A9curit%C3%A9-2, with additional references at http://pmb.com, http://sigb.com, and a GitHub Gist at https://gist.github.com/ZanyMonk/446f6875a2ceb3decef5ff1176428f9e providing exploit analysis or related details.