{"id":"CVE-2026-23748","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-23748","generatedAt":"2026-10-28T01:49:05.856Z","title":"Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit d7f55b38, contain an out-of-bounds read in LightDB State string parsing.","description":"Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit d7f55b38, contain an out-of-bounds read in LightDB State string parsing. When processing a string payload, a payload_size value less than 2 can cause a size_t underflow when computing the number of bytes to copy (nbytes). The subsequent memcpy() reads past the end of the network buffer, which can crash the device. The condition is reachable from on_payload, and golioth_payload_is_null() does not block payload_size==1. A malicious server or MITM can trigger a denial of service.","published":"2026-02-26T18:23:07.000Z","lastModified":"2026-07-14T16:16:53.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":6.3,"severity":"MEDIUM","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-191"],"affected":[],"epss":{"score":0.00308,"percentile":0.23441,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/","source":"disclosure@vulncheck.com"},{"url":"https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b","source":"disclosure@vulncheck.com"},{"url":"https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0","source":"disclosure@vulncheck.com"},{"url":"https://secmate.dev/disclosures/SECMATE-2025-0016","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-bounds-read","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-23748","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}