CVE-2022-0823

Name: CVE-2022-0823
Creator: NVD / NIST
Published: 2022-06-09T16:15:08.16+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.2/10EPSS 0.22%

Last modified Jun 17, 2026

CVE-2022-0823 is a medium-severity vulnerability rated 6.2/10 on the CVSS scale. An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.. EPSS estimates a 0.22% chance of exploitation in the next 30 days.

Description

An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.

Metrics

CVSS 3.1

6.2/10

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

EPSS Probability

0.22%

13.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Zyxel	Gs1200-5 Firmware	< 2.00\(abkm.1\)
Zyxel	Gs1200-5hp Firmware	< 2.00\(abkn.1\)
Zyxel	Gs1200-8 Firmware	< 2.00\(abme.1\)
Zyxel	Gs1200-8hp Firmware	< 2.00\(abmf.1\)

References

https://www.zyxel.com/support/Zyxel-security-advisory-for-password-guessing-vulnerability-of-GS1200-series-switches.shtmlPatch, Vendor Advisory
https://www.zyxel.com/support/Zyxel-security-advisory-for-password-guessing-vulnerability-of-GS1200-series-switches.shtmlPatch, Vendor Advisory

Timeline

Published: Jun 9, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-0823?

An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the password by using a timing side-channel attack.

How severe is CVE-2022-0823?

CVE-2022-0823 has a CVSS score of 6.2/10 (MEDIUM severity). The EPSS model estimates a 0.22% probability of exploitation in the next 30 days.

How do I fix CVE-2022-0823?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-0823?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST