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ExploitedIn CISA KEVFix available

CVE-2022-30525

Exploitation confirmed. First attested on 2022-05-16 by CISA-ADP, CISA KEV, GCVE · kevintel, GCVE · shadowserver.

  • Published2022-05-12
  • Fixed in5.30
  • WeaknessCWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

Timeline

dates in UTC
  1. 2022-05-1214:15CVE publishedNVD
  2. 2022-05-16Added to the CISA KEV catalogCISA KEV
  3. 2022-05-16Listed as exploited by GCVEGCVE
  4. 2022-05-16Exploitation first reportedCISA KEV
  5. 2022-06-03Exploit-DB entryExploit-DB
  6. 2025-01-2916:09SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-30525?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-30525?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Zyxel atp100 firmwareversion to verify
BranchAffectedFixed in
5.x≥ 5.10, < 5.305.30
Zyxel atp100w firmwareversion to verify
BranchAffectedFixed in
5.x≥ 5.10, < 5.305.30
Zyxel atp200 firmwareversion to verify
BranchAffectedFixed in
5.x≥ 5.10, < 5.305.30

13 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA8 products

As Zyxel, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Zyxel USG FLEX 100(W) firmware
    Affected
    • = 5.00 through 5.21 Patch 1no fix stated
  • Zyxel USG FLEX 200 firmware
    Affected
    • = 5.00 through 5.21 Patch 1no fix stated
  • Zyxel USG FLEX 500 firmware
    Affected
    • = 5.00 through 5.21 Patch 1no fix stated
  • Zyxel USG FLEX 700 firmware
    Affected
    • = 5.00 through 5.21 Patch 1no fix stated
  • Zyxel ATP series firmware
    Affected
    • = 5.10 through 5.21 Patch 1no fix stated
  • Zyxel VPN series firmware
    Affected
    • = 4.60 through 5.21 Patch 1no fix stated

2 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-08-31

Fix

  1. Update Zyxel atp100 firmware to 5.30
  2. CISA’s required action: Apply updates per vendor instructions.due 2022-06-06

Advisories and patches

Detection

read 2026-11-03 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-50946
Exploit-DB
Proof-of-concept repositories
14 repositories, unverifiedjbaines-r7/victorian_machineryHenry4E36/CVE-2022-30525shuai06/CVE-2022-30525savior-only/CVE-2022-30525M4fiaB0y/CVE-2022-30525
PoC-in-GitHub
Metasploit modules
1 moduleexploit/linux/http/zyxel_ztp_rcerank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-05-16
Patch Due Date
2022-06-06
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-05-12
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-987m-9prq-3p7m

Frequently asked questions

What is CVE-2022-30525?

A OS command injection vulnerability in the CGI program of Zyxel USG FLEX 100(W) firmware versions 5.00 through 5.21 Patch 1, USG FLEX 200 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 500 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 700 firmware versions 5.00 through 5.21 Patch 1, USG FLEX 50(W) firmware versions 5.10 through 5.21 Patch 1, USG20(W)-VPN firmware versions 5.10 through 5.21 Patch 1, ATP series firmware versions 5.10 through 5.21 Patch 1, VPN series firmware versions 4.60 through 5.21 Patch 1, which could allow an attacker to modify specific files and then execute some OS commands on a vulnerable device.

Is CVE-2022-30525 actively exploited?

Yes. CVE-2022-30525 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-06-06.

What is the CVSS score for CVE-2022-30525?

CVE-2022-30525 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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Sources for this record