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Fencer Vulns
medium 6.2

CVE-2022-0823 json

An improper control of interaction frequency vulnerability in Zyxel GS1200 series switches could allow a local attacker to guess the passwo…

published 2022-06-07 4 y ago modified 2026-06-17 4 mo ago also EUVD-2022-15871

cvss
6.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 14%
public exploits
0
none known

Summary

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.

Patch / fix

  • 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\(abmf.1\)

Exploit prediction

0.23% chance of exploitation in the next 30 days, higher than 14% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • Zyxel Zyxel GS1200 series firmware

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.