# CVE-2026-85438

## Summary

- **CVE ID:** CVE-2026-85438
- **Severity:** CRITICAL
- **CVSS Score:** 9.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-190
- **Published:** Sep 3, 2026
- **Last Modified:** Sep 3, 2026

## Description

MOOS-IvP through 24.8.1 contains a buffer overflow vulnerability in StringToIvPFunction() where dimension, piece, and degree counts from encoded BHV_IPF payloads are used as allocation sizes and loop bounds without validation. Attackers can supply crafted payloads with mismatched dimension values to write attacker-controlled doubles past the end of the IvPBox weight array, causing memory corruption and potential code execution.

## Affected Products

- moos-ivp — moos-ivp (0)

## References

- [CNA](https://github.com/moos-ivp/moos-ivp/pull/126)
- [CNA](https://github.com/moos-ivp/moos-ivp/commit/85f4653ff792b30c3ab14dc0eac0991d1405d904)
- [CNA](https://github.com/moos-ivp/moos-ivp)
- [CNA](https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/FunctionEncoder.cpp#L407)
- [CNA](https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-out-of-bounds-write-via-unvalidated-ivp-payload-counts)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.49%
- **EPSS Percentile:** 40.3

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._