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CVE-2026-9661

7, high

Poste Italiane Postecert FIRMAOK! Uncontrolled Search Path Element Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7, high high CVSS v3.1
EPSS, next 30 days
n/a
Exploitation
Exploit code published
Published
13 Nov 2026yesterday

Description

Poste Italiane Postecert FIRMAOK! 1.6.29 on Windows contains a local privilege escalation vulnerability caused by an uncontrolled OpenSSL search path, where launcher.exe and dependent executables such as updater.exe and tslupdater.exe load OpenSSL configuration and library files from a hardcoded, user-writable directory that does not exist by default. A low-privileged local attacker can create this missing directory and place malicious OpenSSL configuration or library files inside it, causing the application to load and execute attacker-controlled code with the privileges of the user running it, enabling horizontal or, when a higher-privileged user runs the application, vertical privilege escalation up to full system compromise.

Details

Vendor
Poste Italiane
Product
Postecert FIRMAOK!
Weakness
CWE-427 (opens in a new tab)
Status
Received
Updated
13 Nov 2026
Assigner
disclosure@vulncheck.com

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

References 4

Exploit code 2

Other references 2

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Beyond this page

Is CVE-2026-9661 in your network?

This page tells you how dangerous CVE-2026-9661 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 14 Nov 2026, not the live upstream state.