HOMEVULNERABILITIESCVE-2023-5347
CRITICAL

CVE-2023-5347

CWE-327Published: January 9, 2024· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

An Improper Verification of Cryptographic Signature vulnerability in the update process of Korenix JetNet Series allows replacing the whole operating system including Trusted Executables. This issue affects JetNet devices older than firmware version 2024/01.

NVD Source

Technical Analysis

CVE-2023-5347 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), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

korenix84 product(s)
jetnet 5310g firmwarejetnet 5310gjetnet 4508 firmwarejetnet 4508jetnet 4508i-w firmwarejetnet 4508i-wjetnet 4508-w firmwarejetnet 4508-wjetnet 4508if-s firmwarejetnet 4508if-sjetnet 4508if-m firmwarejetnet 4508if-m+72
Source: NVD CPE · 86 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

ADVISORYhttp://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.html
ADVISORYhttp://seclists.org/fulldisclosure/2024/Jan/11
ADVISORYhttps://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/
ADVISORYhttps://www.beijerelectronics.com/en/support/Help___online?docId=69947
ADVISORYhttp://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.html
ADVISORYhttp://seclists.org/fulldisclosure/2024/Jan/11
ADVISORYhttps://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/
ADVISORYhttps://www.beijerelectronics.com/en/support/Help___online?docId=69947

All References (8)

→
http://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.htmlExploit · Third Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2024/Jan/11Exploit · Mailing List · Third Party Advisory
→
https://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/Exploit · Third Party Advisory
→
https://www.beijerelectronics.com/en/support/Help___online?docId=69947Vendor Advisory
→
http://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.htmlExploit · Third Party Advisory · VDB Entry
→
http://seclists.org/fulldisclosure/2024/Jan/11Exploit · Mailing List · Third Party Advisory
→
https://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/Exploit · Third Party Advisory
→
https://www.beijerelectronics.com/en/support/Help___online?docId=69947Vendor Advisory

Quick Facts

CVE IDCVE-2023-5347
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-327
CISA KEVNo
Affected1 vendor(s)
PublishedJan 9, 2024

Related CVEs (CWE-327)

CVE-2026-50086
10.0
CVE-2025-54426
9.9
CVE-2020-36363
9.8
CVE-2019-13022
9.8
CVE-2026-9261
9.8
CVE-2017-4917
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-5347 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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