EUVD-2026-45022
GHSA-8472-2q4c-5q85
Severity by source
CVSS:4.0/AV:N/AC:L/AT:P/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-deliverable HK request with no auth or interaction (AV:N/PR:N/UI:N), but bus-access precondition maps AT:P to AC:H; impact is availability-only DoS (A:H, C/I:N).
Primary rating from Vendor (icscert).
CVSS VectorVendor: icscert
CVSS:4.0/AV:N/AC:L/AT:P/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
Lifecycle Timeline
4DescriptionCVE.org
A vulnerability exists in the Health & Safety (HS) application of NASA's Core Flight System (cFS). The flaw allows the application to crash via segmentation fault when processing a routine Housekeeping Telemetry request, leading to denial of service.
AnalysisAI
Denial of service in NASA's Core Flight System (cFS) Health & Safety (HS) application allows a remote attacker to crash the application through a NULL pointer dereference triggered while processing a routine Housekeeping Telemetry request. All HS versions prior to v7.0.1 are affected; the crash produces a segmentation fault that halts the health-monitoring task. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the attacker to deliver a Housekeeping Telemetry request message to the cFS Health & Safety (HS) application over the cFS Software Bus / telemetry interface (AV:N, PR:N, UI:N). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The signals are consistent but modest in real-world reach. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker with access to the spacecraft's command/telemetry network crafts and injects a Housekeeping Telemetry request to the HS application on the cFS Software Bus; the malformed handling dereferences a NULL pointer, the HS task segfaults, and health/watchdog monitoring is lost until the software is restarted. No public POC is known, and the AT:P requirement means the attacker must be able to deliver a valid HK request onto the bus rather than exploit from an arbitrary internet position. |
| Remediation | Vendor-released patch: v7.0.1 - upgrade the cFS Health & Safety application to HS v7.0.1 (part of the cFS 'Draco' v7.0.1 bundle) per https://github.com/nasa/HS/releases/tag/v7.0.1 and review the CISA advisory ICSA-26-197-03 at https://www.cisa.gov/news-events/ics-advisories/icsa-26-197-03. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, identify all systems running cFS HS versions prior to v7.0.1 and assess their operational criticality. …
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Same weakness CWE-476 – NULL Pointer Dereference
View allSame technique Denial Of Service
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External POC / Exploit Code
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