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.

Metrics

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Adjacent Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation poc

Automatable no

Technical Impact total

Affected Vendors & Products

Vendors Products
Golioth
  • Pouch

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References
Link Providers
https://www.spirityenterprise.com/hardening spirity
https://www.spirityenterprise.com/pentest spirity
https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/ cve-icon cve-icon
https://github.com/golioth/pouch/commit/1b2219a1 cve-icon cve-icon
https://secmate.dev/disclosures/SECMATE-2025-0018 cve-icon cve-icon
https://www.vulncheck.com/advisories/golioth-pouch-ble-gatt-heap-based-buffer-overflow cve-icon cve-icon
History

Fri, 27 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 27 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
References

Fri, 27 Feb 2026 09:15:00 +0000

Type Values Removed Values Added
First Time appeared Golioth
Golioth pouch
Vendors & Products Golioth
Golioth pouch

Thu, 26 Feb 2026 19:45:00 +0000

Type Values Removed Values Added
References

Thu, 26 Feb 2026 19:15:00 +0000

Type Values Removed Values Added
Description Golioth Pouch version 0.1.0 prior to [INSERT FIXED VERSION], fixed in commit 1b2219a1, contain 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. 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

Thu, 26 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
Description Golioth Pouch version 0.1.0 prior to [INSERT FIXED VERSION], fixed in commit 1b2219a1, contain 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.
Title Golioth Pouch < [INSERT FIXED VERSION] BLE GATT Heap-based Buffer Overflow
Weaknesses CWE-122
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}

cvssV4_0

{'score': 7.2, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-27T16:05:34.974Z

Reserved: 2026-01-15T18:42:20.938Z

Link: CVE-2026-23750

cve-icon Vulnrichment

Updated: 2026-02-27T16:05:29.715Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-26T18:23:06.980

Modified: 2026-02-27T15:16:29.433

Link: CVE-2026-23750

cve-icon Redhat

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