CVE Explorer

CVE-2026-34388

Fleet is open source device management software. Prior to 4.81.0, a denial-of-service vulnerability in Fleet's gRPC Launcher endpoint allows an authenticated host to crash the entire Fleet server process by sending an unexpected log type value. The server terminates immediately, disrupting all connected hosts, MDM enrollments, and API consumers. Version 4.81.0 patches the issue.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:8018866e1383da19f363c8803ce5886154c5593ac030d4513c7ced3c8c4f1486

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"fleet","vendor":"fleetdm","versions":[{"status":"affected","version":"< 4.81.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d0149363abd315573934185af9dd04af3c13e67770d1ccb65faf05dcbb0a02cf · sha256:b9c70e8f4267b68b… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.6,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"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:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d0149363abd315573934185af9dd04af3c13e67770d1ccb65faf05dcbb0a02cf · sha256:b9c70e8f4267b68b… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-703","description":"CWE-703: Improper Check or Handling of Exceptional Conditions","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d0149363abd315573934185af9dd04af3c13e67770d1ccb65faf05dcbb0a02cf · sha256:b9c70e8f4267b68b… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv","tags":["x_refsource_CONFIRM"],"url":"https://github.com/fleetdm/fleet/security/advisories/GHSA-w254-4hp5-7cvv"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d0149363abd315573934185af9dd04af3c13e67770d1ccb65faf05dcbb0a02cf · sha256:b9c70e8f4267b68b… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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