EUVD-2025-210504Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
User interaction required to open the archive (UI:R); no privileges needed (PR:N); full code execution gives high impact across confidentiality, integrity, and availability.
Primary rating from Vendor (mitre).
CVSS VectorVendor: mitre
Lifecycle Timeline
3DescriptionCVE.org
An issue in NCH Software ExpressZip v11.29 allows attackers to execute arbitrary code via downloading and executing a crafted archive file.
AnalysisAI
Remote code execution in NCH ExpressZip v11.29 allows attackers to execute arbitrary code by convincing a user to open a crafted archive file. The vulnerability is a protection mechanism failure (CWE-693) with no authentication required and user interaction needed. No active exploitation or public exploit is confirmed at this time.
Technical ContextAI
NCH ExpressZip is a file compression and archive utility. The underlying issue is categorized as CWE-693 (Protection Mechanism Failure), likely involving insufficient validation or sandboxing during archive extraction, allowing a crafted archive to bypass safeguards and execute arbitrary code. The available CPE string (cpe:2.3:a:n/a:n/a:*:*:*:*:*:*:*:*) is a generic placeholder and does not contain the actual vendor or product name, limiting automated asset matching.
RemediationAI
No vendor-released patch has been identified at the time of analysis. Users should avoid opening archive files from untrusted sources. As a compensating control, disable automatic extraction in ExpressZip or use an alternative archive utility until an official fix is released. Blocking archive file downloads from untrusted domains and implementing attachment filtering may reduce exposure, but both measures can impact legitimate workflows.
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Same weakness CWE-693 – Protection Mechanism Failure
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External POC / Exploit Code
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