CVE-2021-31399

low-risk
Published 2021-08-13

On 2N Access Unit 2.0 2.31.0.40.5 devices, an attacker can pose as the web relay for a man-in-the-middle attack.

Do I need to act?

-
0.21% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.6/10 Medium
ADJACENT_NETWORK / LOW complexity

Affected Products (1)

Access Unit 2.0 Firmware

Affected Vendors

2N

References (5)

https://cds.thalesgroup.com/en/tcs-cert/CVE-2021-31399
Third Party Advisory https://excellium-services.com/cert-xlm-advisory/cve-2021-31399/
Vendor Advisory https://www.2n.cz/en_GB/products/ip-access-control/2n-access-unit-2
Third Party Advisory https://excellium-services.com/cert-xlm-advisory/cve-2021-31399/
Vendor Advisory https://www.2n.cz/en_GB/products/ip-access-control/2n-access-unit-2
22
/ 100
low-risk
Severity 16/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal