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TI-2026-19123 Aliases CVE-2026-23750GHSA-xcg8-xp62-9p7g

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

Priority HIGH 67CWE-122Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
None · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00166 5th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GoliothPouch0.1.0—Patch availableCNA
  • Pouch VendorGolioth Affected 0.1.0 Fixed in — Patch available CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23750
  2. 2026-10-03 Alias added: GHSA-xcg8-xp62-9p7g

References

Exploit 1

Patch 1

Other 1

  • TI-2026-19121 Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read CVSS 4.0MEDIUM 6.3
  • TI-2026-19120 Golioth Firmware SDK < 0.22.0 Payload Utils Stack-based Buffer Overflow CVSS 4.0MEDIUM 6.3
  • TI-2026-19122 Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds Read CVSS 4.0LOW 2.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences