CVE-2025-34324Public exploit

Code execution via unsigned update manifests

Published Nov 18, 2025 · Updated Nov 18, 2025

Improper update authentication in GoSign Desktop 2.4.0 and earlier allows attackers to execute arbitrary code through crafted updates. The UpdateManager accepts an unsigned manifest whose package URL and SHA-256 hash can both be replaced when proxy mode disables TLS certificate validation. An attacker must either intercept the proxy-routed connection or locally change proxy settings; installed code runs as the desktop user on Windows and macOS and can run as root on Linux.

CVSS severity7.0
High
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper update authentication in GoSign Desktop 2.4.0 and earlier allows attackers to execute arbitrary code through crafted updates. The UpdateManager accepts an unsigned manifest whose package URL and SHA-256 hash can both be replaced when proxy mode disables TLS certificate validation. An attacker must either intercept the proxy-routed connection or locally change proxy settings; installed code runs as the desktop user on Windows and macOS and can run as root on Linux.

The record

CVE
CVE-2025-34324
Published
Nov 18, 2025
Updated
Nov 18, 2025
Vendor
Tinexta InfoCert S.p.A.
Product
GoSign Desktop
Classifications
CWE-347, T1195.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.4.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Tinexta InfoCert S.p.A. · GoSign Desktopversion=0 <2.4.1

Published CVSS scores

7.0VulnCheckCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-347Improper Verification of Cryptographic Signature
T1195.002Compromise Software Supply Chain

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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