CVE-2026-23750
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk5th percentile - higher than 5% of all known CVEs
Summary
In Golioth Pouch version 0.1.0 prior to commit 1b2219a1, a heap-based buffer overflow exists in BLE GATT server certificate handling. The server_cert_write() function allocates a fixed-size heap buffer and then appends subsequent fragments using memcpy() without verifying that sufficient capacity remains.
Risk Assessment
An adjacent BLE client can send unauthenticated fragments whose combined size exceeds the allocated buffer, causing a device crash or potentially compromising data integrity through memory corruption.
Recommendation
Immediately update Golioth Pouch to a version containing commit 1b2219a1 or later, which fixes the vulnerability by properly checking the size before copying.
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Original NVD description (English source)
Golioth Pouch version 0.1.0, prior to commit 1b2219a1, contains a heap-based buffer overflow in BLE GATT server certificate handling. server_cert_write() allocates a heap buffer of size CONFIG_POUCH_SERVER_CERT_MAX_LEN when receiving the first fragment, then appends subsequent fragments using memcpy() without verifying that sufficient capacity remains. An adjacent BLE client can send unauthenticated fragments whose combined size exceeds the allocated buffer, causing a heap overflow and crash; integrity impact is also possible due to memory corruption.

