CVE-2026-23748

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.

Affected Software

VendorProductVersion RangeStatus
GoliothFirmware SDK0.10.0 < 0.22.0affected
GoliothFirmware SDKd7f55b380d8be8b29bd101ce06e421af2e88c12bunaffected

Weaknesses

  • CWE-191: CWE-191 Integer Underflow (Wrap or Wraparound)

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: poc
    • Automatable: no
    • Technical Impact: partial

References