CVE Explorer

CVE-2026-5067

A remote, unauthenticated attacker can trigger memory corruption in Zephyr's HTTP server WebSocket upgrade path by sending a crafted Sec-WebSocket-Key header. The HTTP/1 header parser copies the header into a fixed-size buffer using a bounded copy that does not guarantee NUL termination when the input length reaches the buffer size. During upgrade handling the buffer is copied to a local stack buffer and passed to strlen(); if no NUL exists in-bounds, strlen() reads beyond the stack buffer and s

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:09bb87c3dd76fabe360752240ea9f48d4c7824ee624b897399295f63cceb96e2

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-170","description":"Improper Null Termination","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-787","description":"Out-of-bounds Write","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"defaultStatus":"unaffected","packageName":"Zephyr","product":"Zephyr","repo":"https://github.com/zephyrproject-rtos/zephyr","vendor":"zephyrproject-rtos","versions":[{"lessThanOrEqual":"4.3.0","status":"affected","version":"3.7.0","versionType":"git"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-170","description":"Improper Null Termination","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-787","description":"Out-of-bounds Write","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wgr4-9pwq-94vj"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/cna/references/0

{"tags":["exploit"],"url":"https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-wgr4-9pwq-94vj"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:72ced1cd7f4d068104c9dd01aa99a15df8ce5d301a3ec1dcddb7d086687b555c · sha256:c9a42032a359e3e2… · /containers/adp/0/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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