CVE-2026-76189: Integer Underflow (Wrap or Wraparound) (CWE-191) in Adobe C2PA Tool
Description
An integer underflow vulnerability (CWE-191) exists in Adobe's C2PA Tool, which can be exploited to cause an application denial-of-service (DoS) by crashing the application. Exploitation does not require user interaction and can be performed with low privileges and low attack complexity.
CVSS v3.1
Score 6.2medium
Affected software
Adobe
C2PA Tool
Adobe
Content Credentials Rust SDK
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-76189 is an integer underflow (wrap or wraparound) vulnerability in Adobe's C2PA Tool, specifically affecting the CAI Content Credentials component. This vulnerability allows an attacker to trigger a condition that causes the application to crash, resulting in a denial-of-service. The vulnerability does not impact confidentiality or integrity, and exploitation requires local access with no user interaction needed. The CVSS v3.1 base score is 6.2, reflecting a medium severity with attack vector local, low attack complexity, no privileges required, and no user interaction.
Potential Impact
Successful exploitation leads to an application denial-of-service by crashing the Adobe C2PA Tool. There is no impact on confidentiality or integrity. The attack requires local access but no privileges or user interaction.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit local access to trusted users to reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- adobe
- Date Reserved
- 2026-08-19T11:06:46.914Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6a8dd2e5acd9273b4981f0a1
Added to database: 08/25/2026, 17:37:41 UTC
Last enriched: 09/10/2026, 18:07:17 UTC
Last updated: 10/08/2026, 18:48:48 UTC
Views: 70
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