CVE-2023-5347: korenix jetnet_4508_firmware
Vulnerability summary
CVE-2023-5347 is a critical (CVSS 9.8) vulnerability in korenix jetnet_4508_firmware. EPSS estimates a 1.34% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities. 3 public exploits are recorded.
Timeline
- 09-01-2024PublishedVulnerability first disclosed.
- 08-10-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
2 scores · 2 sources · 1 version- NVDNIST9.1CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:HDiffers
EPSS trend
Probability
1.34%
Chance of exploitation in the next 30 days
Percentile
71%
Versus all other CVEs
30-day change
0.00 pp
From 1.34% on 21-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
3 foundExploit Reference (cyberdanube.com)
Maturity: unknown
Exploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Korenix43 products
- jetnet_4508_firmware2.3
- jetnet_4508-w_firmware2.3
- jetnet_4508f-m_firmware2.3
- jetnet_4508f-mw_firmware2.3
- jetnet_4508f-s_firmware2.3
1 vendor · 43 products
References
4 links- packetstormsecurity.com/files/176550/Korenix-JetNet-Series-Unauthenticated-Access.htmlExploitThird Party AdvisoryVDB Entry