Vulnerability · Published Nov 18, 2025 · Assigned by VulnCheck
CVE-2025-34324GoSign Desktop < 2.4.1 Insecure Update Mechanism RCE
High 7.0
In plain English
A high-severity security flaw in GoSign Desktop from Tinexta InfoCert S.p.A.. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 1% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official description
GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. The manifest contains package URLs and SHA-256 hashes but is not digitally signed, so its authenticity relies solely on the underlying TLS channel. In affected versions, TLS certificate validation can be disabled when a proxy is configured, allowing an attacker who can intercept network traffic to supply a malicious update manifest and corresponding package with a matching hash. This can cause the client to download and install a tampered update, resulting in arbitrary code execution with the privileges of the GoSign Desktop user on Windows and macOS, or with elevated privileges on some Linux deployments. A local attacker who can modify proxy settings may also abuse this behavior to escalate privileges by forcing installation of a crafted update.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Tinexta InfoCert S.p.A. | GoSign Desktop | 0 – before 2.4.1 |
Weakness: CWE-347 · Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
References
- https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/ technical-description, exploit
- https://infocert.digital/consumer/gosign-suite/ product
- https://www.vulncheck.com/advisories/gosign-desktop-insecure-update-mechanism-rce third-party-advisory
- https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/ technical-description, exploit