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TI-2026-19120 Aliases CVE-2026-23747GHSA-5wx9-6p5v-7r76

Golioth Firmware SDK < 0.22.0 Payload Utils Stack-based Buffer Overflow

Priority MEDIUM 61CWE-121Published · Updated

Key facts

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

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

Summary

Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit 48f521b, contain a stack-based buffer overflow in Payload Utils. The golioth_payload_as_int() and golioth_payload_as_float() helpers copy network-supplied payload data into fixed-size stack buffers using memcpy() with a length derived from payload_size. The only length checks are guarded by assert(); in release builds, the asserts are compiled out and memcpy() may copy an unbounded payload_size. Payloads larger than 12 bytes (int) or 32 bytes (float) can overflow the stack, resulting in a crash/denial of service. This is reachable via LightDB State on_payload with a malicious server or MITM.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0034 27th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Firmware SDK (Golioth): 0.22.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
GoliothFirmware SDK0.10.0 to before 0.22.00.22.0Patch availableCNA
  • Firmware SDK VendorGolioth Affected 0.10.0 to before 0.22.0 Fixed in 0.22.0 Patch available CNA

Remediation

  • Fix · CNA Firmware SDK (Golioth) Fixed in 0.22.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Golioth Firmware SDK 0.22.0

    3 records Highest priority Priority MEDIUM 3 MEDIUM

    Other records, highest priority first

    • TI-2026-19121 Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds ReadPriority MEDIUM 61
    • TI-2026-19122 Golioth Firmware SDK < 0.22.0 Blockwise Transfer Path Out-of-Bounds ReadPriority MEDIUM 44
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23747
  2. 2026-10-03 Alias added: GHSA-5wx9-6p5v-7r76

References

Exploit 1

Patch 1

Other 2

  • TI-2026-19123 Golioth Pouch (prior to commit 1b2219a1) BLE GATT Heap-based Buffer Overflow CVSS 4.0HIGH 7.2
  • TI-2026-19121 Golioth Firmware SDK < 0.22.0 LightDB State Out-of-Bounds Read 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