CVE-2025-2516

CRITICAL

WPS Office >=12.1.0.18276 - Weak Cryptographic Key Pair in Signature Verification

Title source: llm
STIX 2.1

Description

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.

Scores

CVSS v4 9.5
EPSS 0.0011
EPSS Percentile 1.6%
CVSS: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 SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact total

Details

CWE
CWE-326
Status published
Products (1)
Kingsoft/WPS Office 12.1.0.18276
Published Mar 27, 2025
Tracked Since Feb 18, 2026