HOMEVULNERABILITIESCVE-2023-5594
HIGH

CVE-2023-5594

CWE-295Published: December 21, 2023· Updated: Jun 17, 2026

8.6
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2023-5594 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeChanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Affected Vendors & Products

eset9 product(s)
endpoint antivirusendpoint securityfile securityinternet securitymail securitynod32 antivirussecurityserver securitysmart security
Source: NVD CPE · 11 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-security-products-fixed
ADVISORYhttps://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-security-products-fixed

All References (2)

→
https://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-security-products-fixedVendor Advisory
→
https://support.eset.com/en/ca8562-eset-customer-advisory-improper-following-of-a-certificates-chain-of-trust-in-eset-security-products-fixedVendor Advisory

Quick Facts

CVE IDCVE-2023-5594
CVSS Score8.6 / 10
SeverityHIGH
WeaknessCWE-295
CISA KEVNo
Affected1 vendor(s)
PublishedDec 21, 2023

Related CVEs (CWE-295)

CVE-2026-4370
10.0
CVE-2026-9259
9.8
CVE-2018-11747
9.8
CVE-2019-1010275
9.8
CVE-2019-10914
9.8
CVE-2019-18826
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-5594 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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