CVE-2026-23749
Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read
CVSS Score
2.9
EPSS Score
0.0%
EPSS Percentile
0th
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).
| CWE | CWE-170 |
| Vendor | golioth |
| Product | firmware sdk |
| Published | Feb 26, 2026 |
| Last Updated | Mar 23, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
Golioth / Firmware SDK
0.19.1 < 0.22.0
References
secmate.dev: https://secmate.dev/disclosures/SECMATE-2025-0017 blog.secmate.dev: https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/ github.com: https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0 github.com: https://github.com/golioth/golioth-firmware-sdk/commit/0e788217ab4b61a7c1d9fadd1b4a40f5f538a26d vulncheck.com: https://www.vulncheck.com/advisories/golioth-firmware-sdk-blockwise-transfer-path-out-of-bounds-read
Credits
SecMate (https://secmate.dev)