CVE-2026-23748
Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-191 |
| Vendor | golioth |
| Product | firmware sdk |
| Published | Feb 26, 2026 |
| Last Updated | Mar 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
Golioth / Firmware SDK
0.10.0 < 0.22.0
References
secmate.dev: https://secmate.dev/disclosures/SECMATE-2025-0016 blog.secmate.dev: https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/ github.com: https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0 github.com: https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b vulncheck.com: https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-bounds-read
Credits
SecMate (https://secmate.dev)