Golioth Firmware SDK version 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default).

Attack Vector Local

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 Local

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
0.19.1 affected < 0.22.0
commit 0e788217 unaffected —

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Project Subscriptions

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Advisories

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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/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d 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-2025-0017 cve-icon cve-icon
https://www.vulncheck.com/advisories/golioth-firmware-sdk-blockwise-transfer-path-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 0.19.1 prior to 0.22.0, fixed in commit 0e788217, contain an out-of-bounds read due to improper null termination of a blockwise transfer path. blockwise_transfer_init() accepts a path whose length equals CONFIG_GOLIOTH_COAP_MAX_PATH_LEN and copies it using strncpy() without guaranteeing a trailing NUL byte, leaving ctx->path unterminated. A later strlen() on this buffer (in golioth_coap_client_get_internal()) can read past the end of the allocation, resulting in a crash/denial of service. The input is application-controlled (not network by default).
Title Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read
Weaknesses CWE-170
References
Metrics cvssV3_1

{'score': 2.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 2.1, 'vector': 'CVSS:4.0/AV:L/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: 2026-02-26T18:39:37.350Z

Reserved: 2026-01-15T18:42:20.938Z

Link: CVE-2026-23749

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-02-26T18:23:06.763

Modified: 2026-02-26T19:32:38.727

Link: CVE-2026-23749

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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Weaknesses