CVE-2026-23749Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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).
- CVSS
- 2.9 LOW (v3.1, CNA)CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weakness (CWE)
- CWE-170
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Jul 14, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Golioth Firmware SDK golioth:firmware_sdk (from the name) | from 0.19.1 before 0.22.0; 0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d not affected | CNA record |
References
- https://secmate.dev/disclosures/SECMATE-2025-0017technical-description
- https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/technical-description, exploit
- https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0release-notes
- https://github.com/golioth/golioth-firmware-sdk/commit/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26dpatch
- https://www.vulncheck.com/advisories/golioth-firmware-sdk-blockwise-transfer-path-out-of-bounds-readthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.