EUVD-2026-70776
GHSA-7vgj-fwc9-r6gh
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
Pre-authentication network path, no complexity or privilege required, impacts only MOOSDB availability with no confidentiality or integrity effect.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
3DescriptionCVE.org
MOOS core-moos through 10.4.0 fails to validate packet length declarations in CMOOSCommPkt::OnBytesWritten(), allowing unauthenticated attackers to trigger unbounded buffer allocation by sending crafted wire packets. Attackers can send packets with large declared lengths to exhaust server memory and cause denial of service before client authentication completes.
AnalysisAI
Uncontrolled memory allocation in MOOS core-moos through 10.4.0 exposes MOOSDB servers to pre-authentication denial of service. The CMOOSCommPkt::OnBytesWritten() function reads the packet length field directly from untrusted wire data and passes it without any upper-bound check to new unsigned char[], allowing unbounded heap allocation before any client authentication handshake occurs. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | No special conditions are required - the vulnerable code path is reached before client authentication completes, meaning any attacker with TCP connectivity to the MOOSDB listening port can trigger the flaw against a default core-moos installation. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 vector (AV:N/AC:L/AT:N/PR:N/UI:N/VA:H) accurately characterizes this vulnerability: network-accessible, zero preconditions, pre-authentication, with full availability impact. … 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 merging or cherry-picking GitHub PR #81 (https://github.com/themoos/core-moos/pull/81) or building directly from commit e7ea624a7b7828b47fcd35fc43feec1f5cfbbe21. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all MOOS installations running version 10.4.0 or earlier and assess network accessibility; enable memory usage monitoring and logging on MOOSDB processes to detect abnormal allocation patterns. …
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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
Unauthenticated denial-of-service in MOOS core-moos through 10.4.0 allows remote attackers to crash the central MOOSDB p
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 technique Denial Of Service
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External POC / Exploit Code
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