Is CVE-2020-14145 in the CISA KEV catalog?

No. CVE-2020-14145 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-14145?

CVE-2020-14145 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-14145?

CVE-2020-14145 has an EPSS score of 2.06% (79th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-14145?

Upgrade openssh to 8.4 or later.

CVE & CISA-KEV Catalog

CVE-2020-14145

MEDIUMEPSS 79th pctl

5.9

CVSS v3

NVD

Description

The client side in OpenSSH 5.7 through 8.4 has an Observable Discrepancy leading to an information leak in the algorithm negotiation. This allows man-in-the-middle attackers to target initial connection attempts (where no host key for the server has been cached by the client). NOTE: some reports state that 8.5 and 8.6 are also affected.

CWE-203

How to fix

Remediation Available

opensshNVD

Affected:>= 5.7, < 8.4Fixed in:8.4CVE-2020-14145derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Exploit Intelligence

2.06%probability of exploitation in 30 days

79thpercentile

Elevated risk: more likely to be exploited than 79% of all known CVEs.

References

Patch3

Third-Party Advisory5

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-12-18.