CVE-2026-23749
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).
Scoring
- Severity
- LOW
- CVSS base score
- 2.9
- CVSS 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
- EPSS probability
- 0.17%
- CWE
- CWE-170
- Published
- 2026-02-26
- Last modified
- 2026-07-14
Affected products
- Golioth Firmware SDK
- Golioth Firmware SDK
- Golioth Firmware SDK
Weakness type
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