How severe is CVE-2022-46505?

CVE-2022-46505 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-46505 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-46505?

CVE-2022-46505 affects Matrixssl. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-46505?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-46505 published?

CVE-2022-46505 was published on 2023-01-18 and last updated on 2026-06-17.

CVE-2022-46505

CVE-2022-46505 is a high-severity vulnerability in Matrixssl with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-665.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Matrixssl
Published: 2023-01-18
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-46505?: 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.
How severe is CVE-2022-46505?: CVE-2022-46505 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-46505 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-46505?: CVE-2022-46505 affects Matrixssl. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-46505?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-46505 published?: CVE-2022-46505 was published on 2023-01-18 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:matrixssl:matrixssl:*:*:*:*:*:*:*:*

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