CVE-2026-23748

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.

References

https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-bounds-read

https://secmate.dev/disclosures/SECMATE-2025-0016

https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0

https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b

https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS