TI-2022-22985 Aliases CVE-2022-46505 GHSA-682w-9rvw-qw43

An issue in MatrixSSL 4.5.1-open and earlier leads to failure to securely check the…

HIGH 72CWE-665Published 2023-01-18 · Updated 2025-04-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

An issue in MatrixSSL 4.5.1-open and earlier leads to failure to securely check the SessionID field, resulting in the misuse of an all-zero MasterSecret that can decrypt secret data.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00871 59th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

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

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:matrixssl:matrixssl::::::::	up to 4.5.1	Vulnerable	Matrixssl

cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:* Versions up to 4.5.1 Vulnerable ·Matrixssl

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2022-46505
2026-10-03 Alias added: GHSA-682w-9rvw-qw43

References

Exploit 1

https://github.com/SmallTown123/details-for-CVE-2022-46505

Advisory 1

https://smalltown123.notion.site/MatrixSSL-session-resume-bug-a0

TI-2016-05915 Heap-based buffer overflow in MatrixSSL before 3.8.6 allows remote attackers to execute… CVSS 3.0CRITICAL 9.8
TI-2019-10761 In MatrixSSL 3.8.3 Open through 4.2.1 Open, the DTLS server mishandles incoming network… CVSS 3.1CRITICAL 9.8
TI-2017-02003 Out-of-bounds write in Inside Secure MatrixSSL CVSS 3.1CRITICAL 9.8
TI-2017-02002 Out-of-bounds write in Inside Secure MatrixSSL CVSS 3.1CRITICAL 9.8
TI-2022-21609 MatrixSSL 4.0.4 through 4.5.1 has an integer overflow in matrixSslDecodeTls13. CVSS 3.1CRITICAL 9.8
TI-2019-10113 MatrixSSL before 4.2.1 has an out-of-bounds read during ASN.1 handling. CVSS 3.0CRITICAL 9.8

See all 23 →

Sources

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