CVE-2023-5594
Improper following of a certificate's chain of trust in ESET security products
- Published
- Updated
- Reserved
- Assigned by
- ESET
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.
Timeline
ID reserved
By ESET
- 2 months later
· 2 months later
Published
- 8 months later
· 8 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| ESETCNA (assigner) | 3.1 | High7.5 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N |
| NVDNVD · Modified | 3.1 | High8.6 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 0.38% · top 68% of all CVEs (7 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
Affected products
ESET, spol. s r.o. · ESET NOD32 Antivirus
- unaffected 1464
ESET, spol. s r.o. · ESET Internet Security
- unaffected 1464
ESET, spol. s r.o. · ESET Smart Security Premium
- unaffected 1464
ESET, spol. s r.o. · ESET Security Ultimate
- unaffected 1464
ESET, spol. s r.o. · ESET Endpoint Antivirus
- unaffected 1464
ESET, spol. s r.o. · ESET Endpoint Security
- unaffected 1464
ESET, spol. s r.o. · ESET Endpoint Antivirus for Linux 10.0 and above
- unaffected 1464
ESET, spol. s r.o. · ESET Server Security for Windows Server
- unaffected 1464
ESET, spol. s r.o. · ESET Mail Security for Microsoft Exchange Server
- unaffected 1464
ESET, spol. s r.o. · ESET Mail Security for IBM Domino
- unaffected 1464
ESET, spol. s r.o. · ESET Security for Microsoft SharePoint Server
- unaffected 1464
ESET, spol. s r.o. · ESET File Security for Microsoft Azure
- unaffected 1464
ESET, spol. s r.o. · ESET Server Security for Linux 10.1 and above
- unaffected 1464
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-5594)Record last updated .