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CVE

CVE-2026-85438

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

CVE-2026-85438

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

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
9.3
-
4.0
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
C
H
U
0
-
C
H
U
-

Related Resources

No items found.

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85438.json, https://nvd.nist.gov/vuln/detail/CVE-2026-85438, https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-out-of-bounds-write-via-unvalidated-ivp-payload-counts, https://github.com/moos-ivp/moos-ivp/commit/85f4653ff792b30c3ab14dc0eac0991d1405d904, https://github.com/moos-ivp/moos-ivp/pull/126, https://github.com/moos-ivp/moos-ivp, https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/FunctionEncoder.cpp#L407

Severity

0

CVSS Score
0
10

Basic Information

Base CVSS
0
EPSS Probability
0.00879%
EPSS Percentile
0.57822%
Introduced Version
0
Fix Available
85f4653ff792b30c3ab14dc0eac0991d1405d904

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