CVE-2022-46505

HIGHNVD 7.57.5—Elevated

7.5

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.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 73.6%
KEV: Not listed

Published

January 18, 2023

Last Modified

April 4, 2025

References (4)

cve@mitrehttps://github.com/SmallTown123/details-for-CVE-2022-46505
cve@mitrehttps://smalltown123.notion.site/MatrixSSL-session-resume-bug-a0
af854a3a-2127-422b-91ae-364da2661108https://github.com/SmallTown123/details-for-CVE-2022-46505
af854a3a-2127-422b-91ae-364da2661108https://smalltown123.notion.site/MatrixSSL-session-resume-bug-a0

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 11× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:12 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 13:43 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 08:21 UTCEG score recompute

Frequently asked(5)

What is CVE-2022-46505?

CVE-2022-46505 is a high vulnerability published on January 18, 2023. 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.

When was CVE-2022-46505 disclosed?

CVE-2022-46505 was first published in the National Vulnerability Database on January 18, 2023, with the most recent update on April 4, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2022-46505 actively exploited?

CVE-2022-46505 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2022-46505?

CVE-2022-46505 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2022-46505?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-46505, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2022-46505

📅 Published

🔄 Last Modified

🔗 References (4)

Weakness Classification(2)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2022-46505?

🔗 Related CVEs(same CWE)

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Published

Last Modified

References (4)

Frequently asked(5)

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