EUVD-2026-70775
GHSA-wfgh-7j4x-4xjq
Severity by source
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
Network-reachable unauthenticated single-packet crash with no scope change; impact is availability-only (process termination, C:N/I:N).
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
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.
AnalysisAI
Unauthenticated denial-of-service in MOOS core-moos through 10.4.0 allows remote attackers to crash the central MOOSDB process by sending a single crafted message containing a negative serialized string length value. The negative integer passes the existing arithmetic check in CMOOSMsg::operator>> but is then implicitly widened to an enormous size_t by string allocation routines, triggering an unhandled std::exception that escapes the server accept loop and terminates the MOOSDB process - halting all MOOS inter-process communication. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | MOOSDB must be running and its TCP port must be reachable by the attacker. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N) yields a score of 8.7, indicating a high-severity, network-reachable, zero-prerequisite denial-of-service with no ambiguity in metric choice - the attack requires a single crafted packet with no authentication, complexity, or user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the upstream fix by cherry-picking commit 04c92981091fdaa2ff85e2ba7eff94f6288bdbaf or building from the patched branch referenced in GitHub PR #74 (https://github.com/themoos/core-moos/pull/74). … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Inventory all MOOS core-moos deployments and identify instances running version 10.4.0 or earlier; retrieve the patched version from the vendor advisory. …
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Remote code execution risk in MOOS core-moos through 10.4.0 arises from a pre-authentication heap overflow in MOOSCommPk
Unauthenticated variable write in MOOS core-moos through 10.4.0 lets any client that can reach the optional MOOSDB HTTP
Unauthenticated full compromise of the MOOSDB message bus in MOOS core-moos through 10.4.0, where the wire protocol perf
Unauthenticated buffer over-read in MOOS core-moos through 10.4.0 allows any attacker with TCP access to the MOOSDB port
MOOSDB in core-moos through 10.4.0 accepts wire-supplied source identifiers verbatim instead of enforcing the authentica
Uncontrolled memory allocation in MOOS core-moos through 10.4.0 exposes MOOSDB servers to pre-authentication denial of s
Resource exhaustion in the MOOSDB HTTP server component of MOOS core-moos through 10.4.0 allows unauthenticated remote a
Denial-of-service in MOOS core-moos through 10.4.0 allows any unauthenticated network peer to permanently freeze the MOO
Remote process termination in MOOS core-moos through 10.4.0 allows any multicast-reachable attacker to forcibly shut dow
Stored cross-site scripting in MOOS core-moos through 10.4.0 allows any MOOS publisher to inject script payloads into th
Stack corruption with potential code execution in MOOS core-moos through version 10.4.0 arises from an off-by-one error
Same weakness CWE-195 – Signed to Unsigned Conversion Error
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External POC / Exploit Code
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