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CVE-2023-40251

16
FAUCET Score

CVE-2023-40251 is a Missing Encryption of Sensitive Data vulnerability impacting Genians Genian NAC V4.0, V5.0, Genian NAC Suite V5.0, and Genian ZTNA. This flaw allows for Man-in-the-Middle (MitM) attacks due to unencrypted sensitive data transmission. Rated Medium severity (CVSS 5.9), an attacker can exploit this over a network with high attack complexity, potentially leading to high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.0.0, < 4.0.156CPE matchmatch criteria
cpe:2.3:a:genians:genian_nac:*:*:*:*:-:*:*:*
>= 5.0.0, < 5.0.55CPE matchmatch criteria
cpe:2.3:a:genians:genian_nac:*:*:*:*:-:*:*:*
5.0.42CPE matchmatch criteria
cpe:2.3:a:genians:genian_nac:5.0.42:-:*:*:lts:*:*:*
5.0.42CPE matchmatch criteria
cpe:2.3:a:genians:genian_nac:5.0.42:revision_117460:*:*:lts:*:*:*
>= 6.0.0, < 6.0.16CPE matchmatch criteria
cpe:2.3:a:genians:genian_ztna:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.2MEDIUM

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

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.5
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.14%
Probability of exploitation in next 30 days
EPSS Percentile
3.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0014 is in the 0th percentile among its peer group of 19,955 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Remediation records are not available for this CVE.

References

docs.genians.com / nac/5.0/release/ko/advisories/GN-SA-2023-001.html