CVE-2026-23748Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 3.7 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-191
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Golioth Firmware SDK golioth:firmware_sdk (from the name) | from 0.10.0 before 0.22.0; d7f55b380d8be8b29bd101ce06e421af2e88c12b not affected | CNA record |
References
- https://secmate.dev/disclosures/SECMATE-2025-0016technical-description
- https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/technical-description, exploit
- https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0release-notes
- https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12bpatch
- https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-bounds-readthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.