What’s Vulnerable › Vulnerabilities

CVE-2026-23750: Golioth Pouch (prior to commit 1b2219a1) BLE GATT Heap-based Buffer Overflow

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-02-26 · updated 2026-07-14
• Weakness: CWE-122

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.

Affected products

• Golioth Pouch: 0.1.0

References

• https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/
• https://github.com/golioth/pouch/commit/1b2219a1
• https://secmate.dev/disclosures/SECMATE-2025-0018
• https://www.vulncheck.com/advisories/golioth-pouch-ble-gatt-heap-based-buffer-overflow

Get alerted when CVE-2026-23750 or the next vulnerability affects your stack