Vulnerability · Published Sep 3, 2026 · Assigned by VulnCheck

CVE-2026-85438MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts

Critical 9.8

In plain English

A critical-severity integer overflow in moos-ivp from moos-ivp. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 65% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)1.1%top 34.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 (as reported)

Vendor	Product	Versions
moos-ivp	moos-ivp	0 – through 24.8.1

Weakness: CWE-190 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Pull Request #126 issue-tracking, patch
Proposed fix commit (pull request not merged) patch
https://github.com/moos-ivp/moos-ivp product
FunctionEncoder.cpp (verified sink) technical-description
VulnCheck Advisory: MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts third-party-advisory