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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Golioth Firmware SDK unaffected
Version Status Constraints
0.10.0 affected < 0.22.0
commit d7f55b38 unaffected —

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce06e421af2e88c12b cve-icon cve-icon
https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0 cve-icon cve-icon
https://secmate.dev/disclosures/SECMATE-2025-0016 cve-icon cve-icon
https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-bounds-read cve-icon cve-icon
History

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-26T18:39:10.071Z

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

Link: CVE-2026-23748

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

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

Modified: 2026-02-26T19:32:38.580

Link: CVE-2026-23748

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses