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CVE-2023-5376

27
FAUCET Score

CVE-2023-5376 is a critical Improper Authentication vulnerability affecting Korenix JetNet devices with firmware older than 2024/01, allowing unauthorized access to the TFTP service. With a CVSS score of 9.1, this network-exploitable vulnerability requires no user interaction or privileges, enabling high impact to confidentiality and integrity. While the vulnerability is critical, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
2.6CPE matchmatch criteria
cpe:2.3:o:korenix:jetnet_5310g_firmware:2.6:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:o:korenix:jetnet_4508_firmware:2.3:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:o:korenix:jetnet_4508i-w_firmware:1.3:*:*:*:*:*:*:*
2.3CPE matchmatch criteria
cpe:2.3:o:korenix:jetnet_4508-w_firmware:2.3:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:o:korenix:jetnet_4508if-s_firmware:1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.41%
Probability of exploitation in next 30 days
EPSS Percentile
69.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0141 is in the 57th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstormsecurity.com / files/176550/Korenix-JetNet-Series-Unauthenticated-Access.html
ExploitThird Party AdvisoryVDB Entry
cyberdanube.com / en/en-multiple-vulnerabilities-in-korenix-jetnet-series
ExploitThird Party Advisory
seclists.org / fulldisclosure/2024/Jan/11
ExploitMailing ListThird Party Advisory
beijerelectronics.com / en/support/Help___online
Vendor Advisory