CVE-2026-85441 json
MOOS core-moos through 10.4.0 MOOSDB Denial of Service via Negative Serialized String Length
published 2026-09-03 2 mo ago modified 2026-10-14 25 d ago also EUVD-2026-70775
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
MOOS core-moos through 10.4.0 fails to validate that serialized string lengths are non-negative in CMOOSMsg::operator>>. Unauthenticated attackers can send a crafted message with a negative length value to the MOOSDB port, causing an unhandled exception that terminates the database process.
Patch / fix
- themoos core-moos 10.4.0
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | 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 |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| CNA | 4.0 | 8.7 | 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/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 |
Affected products
- themoos core-moos
Classification
- Weakness
-
- CWE-195 Signed to Unsigned Conversion Error
References
-
github.com
/themoos/core-moos/pull/74
issue-tracking, patch
-
github.com
/themoos/core-moos/commit/04c92981091fdaa2ff85e2ba7eff94f6288bdbaf
patch, vendor-advisory
-
github.com
/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243acd223433f0c/Core/libMOOS/Comms/MOOSMsg.cpp#L453
technical-description, patch, vendor-advisory
-
github.com
/themoos/core-moos
product
-
vulncheck.com
/advisories/moos-core-moos-through-10.4.0-moosdb-denial-of-service-via-negative-serialized-string-length
third-party-advisory
Sources
- CVE List CVE-2026-85441
- NVD CVE-2026-85441
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