CVE-2026-23748 (GCVE-0-2026-23748)

Vulnerability from cvelistv5 – Published: 2026-02-26 17:31 – Updated: 2026-11-08 14:01
VLAI
Title
Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read
Summary
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.
Severity
6.3 (Medium)
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
3.7 (Low)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-27 16:06 UTC
CWE
  • CWE-191 - Integer Underflow (Wrap or Wraparound)
Assigner
VulnCheck CNA
References
Impacted products
Vendor Product Version
Golioth Firmware SDK Affected: 0.10.0 , < 0.22.0 (semver)
Unaffected: d7f55b380d8be8b29bd101ce06e421af2e88c12b (git)
Create a notification for this product.
Credits
SecMate (https://secmate.dev)
Show details on NVD website
To clipboard 

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