{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23747","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-01-15T18:42:20.937Z","datePublished":"2026-02-26T17:30:13.495Z","dateUpdated":"2026-07-14T15:53:36.335Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-07-14T15:53:36.335Z"},"title":"Golioth Firmware SDK < 0.22.0 Payload Utils Stack-based Buffer Overflow","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit&nbsp;48f521b, contain a stack-based buffer overflow in Payload Utils. The golioth_payload_as_int() and golioth_payload_as_float() helpers copy network-supplied payload data into fixed-size stack buffers using memcpy() with a length derived from payload_size. The only length checks are guarded by assert(); in release builds, the asserts are compiled out and memcpy() may copy an unbounded payload_size. Payloads larger than 12 bytes (int) or 32 bytes (float) can overflow the stack, resulting in a crash/denial of service. This is reachable via LightDB State on_payload with a malicious server or MITM."}],"value":"Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit 48f521b, contain a stack-based buffer overflow in Payload Utils. The golioth_payload_as_int() and golioth_payload_as_float() helpers copy network-supplied payload data into fixed-size stack buffers using memcpy() with a length derived from payload_size. The only length checks are guarded by assert(); in release builds, the asserts are compiled out and memcpy() may copy an unbounded payload_size. Payloads larger than 12 bytes (int) or 32 bytes (float) can overflow the stack, resulting in a crash/denial of service. This is reachable via LightDB State on_payload with a malicious server or MITM."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-121","description":"CWE-121 Stack-based Buffer Overflow","lang":"en","type":"CWE"}]}],"affected":[{"defaultStatus":"unaffected","packageURL":"pkg:github/golioth/golioth-firmware-sdk","product":"Firmware SDK","repo":"https://github.com/golioth/golioth-firmware-sdk","vendor":"Golioth","versions":[{"lessThan":"0.22.0","status":"affected","version":"0.10.0","versionType":"semver"},{"status":"unaffected","version":"48f521bcc0187ada2b9cbdad31dc380e6c7b7332","versionType":"git"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":3.7,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"references":[{"tags":["technical-description"],"url":"https://secmate.dev/disclosures/SECMATE-2025-0015"},{"tags":["technical-description","exploit"],"url":"https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/"},{"tags":["release-notes"],"url":"https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0"},{"tags":["patch"],"url":"https://github.com/golioth/golioth-firmware-sdk/commit/48f521bcc0187ada2b9cbdad31dc380e6c7b7332"},{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/golioth-firmware-sdk-payload-utils-stack-based-buffer-overflow"}],"credits":[{"lang":"en","type":"finder","value":"SecMate (https://secmate.dev)"}],"x_generator":{"engine":"Vulnogram 0.5.0"},"source":{"discovery":"EXTERNAL"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-27T16:07:17.351702Z","id":"CVE-2026-23747","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-02-27T16:07:30.232Z"}}]}}