Read the docs
TI-2026-58638 Aliases CVE-2026-85440GHSA-m984-rrgf-rcwh

MOOS core-moos through 10.4.0 MOOSDB Pre-Authentication Heap Overflow via Negative Packet Length

Priority MEDIUM 50CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

MOOS core-moos through 10.4.0 contains a pre-authentication heap overflow vulnerability in MOOSCommPkt packet handling that allows remote attackers to write arbitrary data by declaring a negative packet length. Attackers can exploit the signed integer check in InflateTo() and negative size conversion in recv() to overflow a four-byte heap buffer during the HandShake phase before authentication.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01026 63rd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
themooscore-moosup to 10.4.0—No fix listedCNA
  • core-moos Vendorthemoos Affected up to 10.4.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:themoos:core-moos:*:*:*:*:*:*:*:*before 10.4.0Vulnerablethemoos
  • cpe:2.3:a:themoos:core-moos:*:*:*:*:*:*:*:* Versions before 10.4.0 Vulnerable ·themoos

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-85440
  2. 2026-10-03 Alias added: GHSA-m984-rrgf-rcwh

References

Patch 3

Other 1

  • TI-2026-58653 MOOS core-moos through 10.4.0 MOOSDB Out-of-Bounds Read via Short Packet CVSS 4.0HIGH 8.8
  • TI-2026-58626 MOOS core-moos through 10.4.0 MOOSDB HTTP Server Unauthenticated Variable Write CVSS 4.0CRITICAL 9.3
  • TI-2026-58622 MOOS core-moos through 10.4.0 Missing Authentication for MOOSDB Publish, Subscribe and DB_CLEAR CVSS 4.0CRITICAL 9.3
  • TI-2026-58648 MOOS core-moos through 10.4.0 MOOSDB HTTP Server Resource Exhaustion CVSS 4.0HIGH 8.7
  • TI-2026-58641 MOOS core-moos through 10.4.0 MOOSDB Accept Loop Denial of Service CVSS 4.0HIGH 8.7
  • TI-2026-58640 MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Unbounded Packet Allocation CVSS 4.0HIGH 8.7
See all 11 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences