CVE-2026-76198: Improper Input Validation (CWE-20) in Adobe C2PA Tool

CVE-2026-76198 describes an Improper Input Validation vulnerability in Adobe's C2PA Tool, specifically in the CAI Content Credentials component. This flaw enables an attacker to read arbitrary files on the victim's file system by tricking the user into opening a malicious file. The vulnerability does not require privileges but does require user interaction. The CVSS vector indicates local attack vector with low attack complexity, no privileges required, user interaction required, and high confidentiality impact without integrity or availability impact.

Successful exploitation allows an attacker to access sensitive files and directories beyond the intended scope, potentially leading to information disclosure. There is no impact on integrity or availability. Exploitation requires user interaction, limiting the attack vector to scenarios where a victim opens a crafted malicious file.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should exercise caution when opening files from untrusted sources to prevent exploitation.