CVE-2025-34324 GoSign Desktop < 2.4.1 Insecure Update Mechanism RCE
An attacker can execute arbitrary code by intercepting network traffic to supply a malicious update manifest when TLS validation is disabled via proxy settings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-34324?
CVE-2025-34324 is a high-severity code injection vulnerability in Tinexta InfoCert S.p.A. GoSign Desktop, published on 18 Nov 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-347
Which versions are affected by CVE-2025-34324?
It affects 1 product.
Products include Infocert Gosign.
How do I fix CVE-2025-34324?
No fix has been published for CVE-2025-34324 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2025-34324 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-34324 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-777r-h845-392r.