Paper/Archive/CVE-2025-2516

CVE-2025-2516

Kingsoft WPS Office — Use of a weak cryptographic key in the signature verification process in WPS Office

Description · from the CVE record

The use of a weak cryptographic key pair in the signature verification process in WPS Office (Kingsoft) on Windows allows an attacker who successfully recovered the private key to sign components. As older versions of WPS Office did not validate the update server's certificate, an Adversary-In-The-Middle attack was possible allowing updates to be hijacked.

Affected

ProductAffectedFixed inSource
WPS Officesee advisory–CNA

Scores by source

ESET (CNA)9.5CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/U:Amber
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

refwelivesecurity.com/en/eset-research/nspx30-sophisticated-aitm-enabled-implant-evolving-since-2005