CVE-2022-30525

unknown KEV

Published 2022-05-16 · Modified 2022-05-16

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CVSS v3

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CVSS v4 NEW

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not yet in upstream

VIR risk

2.5

Description

A command injection vulnerability in the CGI program of some Zyxel firewall versions could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

CISA KEV

Vendor: Zyxel
Product: Multiple Firewalls
Due date: 2022-06-06

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Exploits

Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.

Exploit-DB

EDB-50946 remote hardware

Valentin Lobstein · 2022-06-03

Zyxel USG FLEX 5.21 - OS Command Injection

Source code queued for fetch — refresh in a moment.

Metasploit modules

exploit_linux/http/zyxel_ztp_rce rank 600

Zyxel Firewall ZTP Unauthenticated Command Injection

Source fetch failed: fetch_error — view the original via the link above.

References

https://nvd.nist.gov/vuln/detail/CVE-2022-30525

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.