{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-23749","assignerOrgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","state":"PUBLISHED","assignerShortName":"VulnCheck","dateReserved":"2026-01-15T18:42:20.938Z","datePublished":"2026-02-26T17:32:30.795Z","dateUpdated":"2026-07-14T15:53:37.722Z"},"containers":{"cna":{"providerMetadata":{"orgId":"83251b91-4cc7-4094-a5c7-464a1b83ea10","shortName":"VulnCheck","dateUpdated":"2026-07-14T15:53:37.722Z"},"title":"Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Golioth Firmware SDK version&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">0.19.1</span>&nbsp;prior to 0.22.0, fixed in commit&nbsp;0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx-&gt;path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default)."}],"value":"Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default)."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-170","description":"CWE-170: Improper Null Termination","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":"0.19.1","versionType":"semver"},{"status":"unaffected","version":"0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d","versionType":"git"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":2.1,"baseSeverity":"LOW","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/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":"LOCAL","availabilityImpact":"LOW","baseScore":2.9,"baseSeverity":"LOW","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/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-2025-0017"},{"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/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d"},{"tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/golioth-firmware-sdk-blockwise-transfer-path-out-of-bounds-read"}],"credits":[{"lang":"en","type":"finder","value":"SecMate (https://secmate.dev)"}],"x_generator":{"engine":"Vulnogram 0.5.0"},"source":{"discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-02-27T17:55:58.632725Z","id":"CVE-2026-23749","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":"2026-02-27T17:56:08.833Z"}}]}}