CVE WatchJul 14, 2026

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 terminatio

CVSS

2.9

Low

EPSS

0.2%

KEV

—

Exploit Today

0-100

Published: Feb 26, 2026 · Last modified: Jul 14, 2026 · CWE-170

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-06-302026-07-16

Technical 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).

Official references

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