Description
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.
Affected products
themoos: core-moos
References5
- github.com/themoos/core-moos/blob/ec9c77c68fcbdef8f5e4c60fe243a… PatchVendor Advisory
- github.com/themoos/core-moos/commit/04c92981091fdaa2ff85e2ba7ef… Vendor Advisory
- github.com/themoos/core-moos/pull/74 Issue TrackingPatch
- github.com/themoos/core-moos Product
- www.vulncheck.com/advisories/moos-core-moos-through-10.4.0-moos… Third Party Advisory
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - CVSS 4.0
-
8.7
HIGH
Score source: CNA
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 - EPSS — exploit probability
- 1% percentile: 51 · as of 2 November 2026
- CWE
- CWE-195
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.