CVE-2026-85431: MOOS essential-moos through version 10.0.1 contains an unauthenticated UDP packet injection vulnerability in p

Q: How do I fix CVE-2026-85431?

essential-moos: upgrade to newer than 10.0.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-85431 being exploited?

CVE-2026-85431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-85431 affect?

CVE-2026-85431 affects essential-moos. Severity is high (CVSS 7.5). MOOS essential-moos through version 10.0.1 contains an unauthenticated UDP packet injection vulnerability in pMOOSBridge when configured with UDPListen. Attackers can send crafted UDP packets to the configured port to inject arbitrary varia

Q: How urgent is CVE-2026-85431?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-85431 is a high-severity flaw (CVSS 7.5) affecting essential-moos. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

MOOS essential-moos through version 10.0.1 contains an unauthenticated UDP packet injection vulnerability in pMOOSBridge when configured with UDPListen. Attackers can send crafted UDP packets to the configured port to inject arbitrary variables into the local MOOS community with spoofed source and community identifiers.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	3.4% (top 11%)
CISA exploited list	No
Weakness	CWE-345
Published	2026-09-03
Last modified	2026-10-14

Publisher (CNA): VulnCheck · Vendor: themoos

Last updated 2026-10-14 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-03 23:17 UTCPublished CVE record published
2026-10-14 15:21 UTCUpdated Record last modified

themoos essential-moos UPGRADE

Affected: <= 10.0.1

Fixed in: newer than 10.0.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy essential-moos || rpm -q essential-moos || essential-moos --version

2. UPGRADE to newer than 10.0.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade essential-moos

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade essential-moos

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Exact fixes by distribution

Fedora 46 · ddnet · FIXED · 20.2-1.fc46 · FEDORA-2026-6991b4ab14 · source

sudo dnf upgrade --advisory=FEDORA-2026-6991b4ab14

Fedora ELN · libplacebo · FIXED · 7.360.1-5.eln159 · FEDORA-2026-92226f221e · source

sudo dnf upgrade --advisory=FEDORA-2026-92226f221e

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-85431?

essential-moos: upgrade to newer than 10.0.1. Exact commands for each OS are on this page.

Is CVE-2026-85431 being exploited?

CVE-2026-85431 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-85431 affect?

CVE-2026-85431 affects essential-moos. Severity is high (CVSS 7.5). MOOS essential-moos through version 10.0.1 contains an unauthenticated UDP packet injection vulnerability in pMOOSBridge when configured with UDPListen. Attackers can send crafted UDP packets to the configured port to inject arbitrary varia

How urgent is CVE-2026-85431?

Priority 58/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-85436 HIGH 7.5 UPGRADE MOOS essential-moos through 10.0.1 contains a buffer overflow vulnerability in CMOOSUDPLink::ReadPktFromArray(
CVE-2026-85433 CRITICAL 9.8 UPGRADE MOOS essential-moos pShare through 10.0.1 fails to properly authorize PSHARE_CMD messages, allowing any publis
CVE-2026-85427 HIGH 8.1 UPGRADE MOOS essential-moos pAntler through 10.0.1 contains a remote code execution vulnerability that allows unauthen
CVE-2026-85430 CRITICAL 9.1 UPGRADE MOOS essential-moos through 10.0.1 contains an authentication bypass vulnerability in pShare that accepts UDP

References

← Back to latest CVEs