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.

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History

Fri, 27 Feb 2026 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 27 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
References

Fri, 27 Feb 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Golioth
Golioth firmware Sdk
Vendors & Products Golioth
Golioth firmware Sdk

Thu, 26 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
References

Thu, 26 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
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.
Title Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read
Weaknesses CWE-191
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.3, 'vector': '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-27T16:06:24.182Z

Reserved: 2026-01-15T18:42:20.937Z

Link: CVE-2026-23748

cve-icon Vulnrichment

Updated: 2026-02-27T16:06:18.488Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-26T18:23:06.550

Modified: 2026-02-27T15:16:29.030

Link: CVE-2026-23748

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-27T09:07:19Z

Weaknesses