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CVE-2023-5347
Unauthenticated Firmware Upgrade
Critical9.8EPSS 1.3%
- Published
- Updated
- Reserved
- Assigned by
- CyberDanube
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| CyberDanubeCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.3% · top 29% of all CVEs (4 Nov 2026)
- CISA SSVC
- Exploitation: poc · Automatable: yes · Technical impact: total
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
- affected firmware older than 2024/01
What to do
Workaround: See: https://www.beijerelectronics.com/en/support/Help___online?docId=69947
References (4)
- https://www.beijerelectronics.com/en/support/Help___online?docId=69947 (opens in a new tab)x_transferred
- https://cyberdanube.com/en/en-multiple-vulnerabilities-in-korenix-jetnet-series/ (opens in a new tab)x_transferred
- http://seclists.org/fulldisclosure/2024/Jan/11 (opens in a new tab)x_transferred
- http://packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.html (opens in a new tab)x_transferred
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-2023-5347)Record last updated .