CVE-2026-38076 Artifex Software CVE debrief

Who should care

Defenders and system administrators using the jbig2dec library should be aware of this vulnerability and take necessary actions to verify and patch affected systems. They should prioritize verifying and patching affected systems, especially those using the jbig2dec library. The vulnerability has a CVSS score of 7.5 and is classified as HIGH, which means it can cause significant damage if exploited. Therefore, defenders should take immediate action to patch

Why it matters

CVE-2026-38076 is a high-severity vulnerability in the jbig2dec library that could allow attackers to cause a Denial of Service (DoS) via a crafted input. Defenders should prioritize verifying and patching affected systems, especially those using the jbig2dec library.

• Potential Denial of Service (DoS) attacks
• Verification of affected systems and patches
• Monitoring for suspicious activity
• Review of system logs for potential attacks

Technical summary

The vulnerability is caused by an integer overflow in the jbig2_arith_iaid_ctx_new() function of Artifex commit cc37d0. This allows attackers to cause a Denial of Service (DoS) via a crafted input. The vulnerability has a CVSS score of 7.5 and is classified as HIGH. It was published on 2026-07-09T22:17:03.983Z and last modified on 2026-09-14T14:17:07.643Z. Defenders and system administrators using the jbig2dec library should be aware of this vulnerability and take necessary actions to verify and patch affected systems.

Defensive priority

Defenders should prioritize verifying and patching affected systems, especially those using the jbig2dec library.

Recommended defensive actions

• Verify and patch affected systems using the jbig2dec library
• Monitor for potential DoS attacks
• Review system logs for suspicious activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.

Evidence notes

The vulnerability is caused by an integer overflow in the jbig2_arith_iaid_ctx_new() function of Artifex commit cc37d0. The CVE record and NVD detail page provide official information about the vulnerability.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.