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Vulnerability record · CVE-2023-5594 · published 21 December 2023

CVE-2023-5594: Eset endpoint antivirus improper certificate validation vulnerability

Eset · Endpoint Antivirus

Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.

8.6 CVSS 3.1 High EPSS 0.38% · top 71.1% CWE-295 · Improper certificate validation
8.6CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
9Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Improper validation of the server’s certificate chain in secure traffic scanning feature considered intermediate certificate signed using the MD5 or SHA1 algorithm as trusted.

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

Affected products

9 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-se Vendor Advisory
https://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-se Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2023-5594), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.