CVE-2026-23750

Description

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.

References

https://www.vulncheck.com/advisories/golioth-pouch-ble-gatt-heap-based-buffer-overflow

https://secmate.dev/disclosures/SECMATE-2025-0018

https://github.com/golioth/pouch/commit/1b2219a1

https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS