CVE-2026-92158 nasa CVE debrief

Who should care

Defenders responsible for F´-based systems, particularly those using the FpySequencer, should assess exposure and prioritize updating to version 4.2.0 or later. This includes operators, security teams, and vulnerability management teams that oversee F´-based systems. They should review the FpySequencer configuration, monitor for potential memory corruption and denial of service, and plan vendor-supported updates or mitigations through normal change control

Why it matters

CVE-2026-92158 is a high-severity vulnerability in F´'s FpySequencer that can lead to memory corruption, denial of service, and potentially code execution. Defenders should prioritize updating to version 4.2.0 or later.

• Potential memory corruption and denial of service
• Possible code execution if exploited
• Need for verification of affected versions and exposure
• Priority on updating to version 4.2.0 or later

Technical summary

The FpySequencer in F´ has a vulnerability where the STORE directive's stack write validation can be bypassed due to an integer wraparound, allowing for an out-of-bounds write. This can lead to memory corruption, denial of service, and potentially code execution in F´-based systems, particularly those using the FpySequencer. The issue is a high-severity vulnerability that can be exploited by supplying a stack offset and size whose U32 sum wraps, making an out-of-range destination appear valid. The vulnerability is fixed in version 4.2.0.

Defensive priority

Defenders should prioritize updating to version 4.2.0 or later to address this vulnerability.

Recommended defensive actions

• Update to version 4.2.0 or later
• Review and verify the FpySequencer configuration
• Monitor for potential memory corruption and denial of service
• 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 CVE record and source item provide details on the vulnerability, its impact, and the fix in version 4.2.0. The vulnerability allows for potential memory corruption, denial of service, and code execution. The FpySequencer in F´ has a vulnerability where the STORE directive's stack write validation can be bypassed due to an integer wraparound. The issue is fixed in version 4.2.0. Defenders should prioritize updating to version 4.2.0 or later to address this vulnerability. The vulnerability can be exploited by supplying a stack

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.