# CVE-2026-76189: Adobe Content Credentials integer underflow in decoder

Source: https://junglewise.ai/threats/cve-2026-76189-adobe-content-credentials-integer-underflow-in-decoder  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-25. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-76189 · Severity: medium · CVSS 6.2 · Published 2026-08-25

Adobe Content Credentials, a component used to verify the authenticity and origin of digital content, is vulnerable to an integer underflow flaw. An attacker could craft a malicious file to crash the application without requiring any user interaction, causing a denial-of-service condition and disrupting content verification workflows.

Technologies: [Adobe C2pa](https://junglewise.ai/threats/technologies/c2pa), [Adobe C2patool](https://junglewise.ai/threats/technologies/c2patool), [Adobe Content Credentials](https://junglewise.ai/threats/technologies/content-credentials). Vendors: [Adobe](https://junglewise.ai/threats/vendors/adobe).

## Quick answers

**Is CVE-2026-76189 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-76189 being exploited in the wild.

**How severe is CVE-2026-76189?** Medium severity, with a CVSS score of 6.2, published 25 August 2026.

**Which products and versions are affected?** Adobe Content Credentials.

**Is there a fix for CVE-2026-76189?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-76189 attacked?** It is attacked over the network, in a software library.

**Am I affected by CVE-2026-76189?** Check whether you run Adobe C2pa, Adobe C2patool or Adobe Content Credentials. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The vulnerability is an integer underflow (wraparound) condition in the Content Credentials decoder that processes untrusted input. The defect allows an attacker to supply specially crafted input that causes a numeric value to wrap around, resulting in memory corruption or logic errors. The flaw is reachable over the network without authentication or user interaction, allowing remote denial-of-service. Exploitation crashes the affected application. Patches are available from Adobe.

## Affected products

- Adobe Content Credentials

## Timeline

- 2026-08-25: disclosed

## References

- [https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-110.html](https://helpx.adobe.com/security/products/content-authenticity-sdk/apsb26-110.html)

## Related threats

- [Adobe Content Credentials SDK server-side request forgery](https://junglewise.ai/threats/cve-2026-95634-cai-content-credentials-is-affected-by-a-server-side-request)
- [Adobe Content Credentials Rust SDK improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-95633-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials improper cryptographic signature verification](https://junglewise.ai/threats/cve-2026-95632-cai-content-credentials-is-affected-by-an-improper-verification)
- [Adobe Content Credentials SDK multiple security feature bypasses](https://junglewise.ai/threats/cve-2026-48378-cai-content-credentials-is-affected-by-an-improper-input)
- [Adobe Content Credentials SDK improper input validation and certificate bypass](https://junglewise.ai/threats/cve-2026-48377-cai-content-credentials-is-affected-by-an-improper-input)