CVE-2026-114197 Mandiant FLARE CVE debrief

Who should care

Defenders and security teams responsible for analyzing executable files using Mandiant FLARE capa should be aware of this vulnerability and take necessary actions to prevent exploitation.

Why it matters

CVE-2026-114197 is a high-severity vulnerability in Mandiant FLARE capa that allows for arbitrary code execution. Defenders should prioritize verifying and updating capa installations to prevent potential exploitation and compromise.

• Potential arbitrary code execution when processing crafted .viv or .exe.viv workspaces
• Possible compromise of systems running vulnerable capa versions
• Need for verification and updating capa installations to version 10.0.0 or later

Technical summary

The vulnerability is caused by deserialization of untrusted data in Mandiant FLARE capa. When a crafted .viv or .exe.viv workspace is processed, it allows for arbitrary code execution. The issue affects capa versions before 10.0.0. This vulnerability can be addressed by verifying and updating capa installations to version 10.0.0 or later, especially in environments where untrusted or unknown files are analyzed. Additionally, reviewing and restricting input to capa can prevent processing of untrusted or unknown files.

Defensive priority

Defenders should prioritize verifying and updating capa installations to version 10.0.0 or later, especially in environments where untrusted or unknown files are analyzed.

Recommended defensive actions

• Verify capa installations and update to version 10.0.0 or later
• Review and restrict input to capa to prevent processing of untrusted or unknown files
• Monitor capa logs and system activity for potential exploitation attempts

Evidence notes

The CVE record and source item provide details on the vulnerability, its impact, and affected versions. However, additional information on potential exploitation or affected systems is limited.

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.