Vulnerability · Published Feb 4, 2022 · Assigned by talos

CVE-2021-21959

High 7.7

In plain English

A high-severity improper certificate validation in Sealevel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.0)7.7High

Exploit odds (30 days)0.8%top 41.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

A misconfiguration exists in the MQTTS functionality of Sealevel Systems, Inc. SeaConnect 370W v1.3.34. This misconfiguration significantly simplifies a man-in-the-middle attack, which directly leads to control of device functionality.

Affected products (as reported)

Vendor	Product	Versions
n/a	Sealevel	Sealevel Systems, Inc. SeaConnect 370W v1.3.34

Weakness: CWE-295 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1388 x_refsource_MISC