CVE-2026-85438CWE-190

CVE-2026-85438

Critical · published September 4, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
65.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · 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
EPSS
0.01086 · 65.0th percentile
Weakness
CWE-190 · Integer Overflow or Wraparound
Published
2026-09-04T03:17Z
Affected products (1)
ProductVersionsFixed in
mit/moos-ivp< 24.8.124.8.1
References (5)
https://github.com/moos-ivp/moos-ivp · [email protected]https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/FunctionEncoder.cpp#L407 · [email protected]https://github.com/moos-ivp/moos-ivp/commit/85f4653ff792b30c3ab14dc0eac0991d1405d904 · [email protected]https://github.com/moos-ivp/moos-ivp/pull/126 · [email protected]https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-out-of-bounds-write-via-unvalidated-ivp-payload-counts · [email protected]
EPSS history
Timeline
  • 05 SEP 03:44Z
    EPSS moved — → 0%
    epss
  • 03 SEP 22:38Z
    MOOS-IvP through 24.8.1 Out-of-Bounds Write via Unvalidated IvP Payload Counts
    cvelistv5