Exploitation evidence
Known exploited · CISA KEV listed
Added 2022-05-16. Ransomware campaign use: Unknown.
CISA required action: Apply updates per vendor instructions.
CISA due date: 2022-06-06. This is the catalog’s deadline, not an assessment of your organization’s exposure.
KEV checked 13 Nov 2026, 00:20 Jerusalem · Original catalog ↗Reported products and versions
Zyxel / USG FLEX 100(W) firmware
Default status: Not specified
- affected: 5.00 through 5.21 Patch 1
Zyxel / USG FLEX 200 firmware
Default status: Not specified
- affected: 5.00 through 5.21 Patch 1
Zyxel / USG FLEX 500 firmware
Default status: Not specified
- affected: 5.00 through 5.21 Patch 1
Zyxel / USG FLEX 700 firmware
Default status: Not specified
- affected: 5.00 through 5.21 Patch 1
Zyxel / ATP series firmware
Default status: Not specified
- affected: 5.10 through 5.21 Patch 1
Zyxel / VPN series firmware
Default status: Not specified
- affected: 4.60 through 5.21 Patch 1
Zyxel / USG FLEX 50(W) firmware
Default status: Not specified
- affected: 5.10 through 5.21 Patch 1
Zyxel / USG 20(W)-VPN firmware
Default status: Not specified
- affected: 5.10 through 5.21 Patch 1
Fixes and workarounds
No explicit solution text in the downloaded CVE record. Consult the vendor advisory; unaffected version ranges are shown above as reported, not inferred as a patch recommendation.
Sources and related reporting
CVE Program record ↗ · Download tracked evidence as JSON
- https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
- http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html
- http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
- http://packetstormsecurity.com/files/167372/Zyxel-USG-FLEX-5.21-Command-Injection.html
- http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-30525
Observed change timeline
History begins when Egret first downloads each source. It is not the complete upstream CVE history.
12 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-12",
"epss": 0.99944,
"percentile": 0.99973
}10 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-10",
"epss": 0.99944,
"percentile": 0.99973
}09 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-09",
"epss": 0.99944,
"percentile": 0.99973
}08 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-08",
"epss": 0.99944,
"percentile": 0.99973
}07 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-07",
"epss": 0.99944,
"percentile": 0.99973
}06 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-06",
"epss": 0.99944,
"percentile": 0.99973
}06 Nov 2026, 06:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-05",
"epss": 0.99944,
"percentile": 0.99973
}05 Nov 2026, 00:20 Jerusalem · CVE Program record changed
Stored CNA snapshot at this observation.
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}04 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-04",
"epss": 0.99944,
"percentile": 0.99973
}03 Nov 2026, 18:20 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-03",
"epss": 0.99944,
"percentile": 0.99973
}03 Nov 2026, 02:22 Jerusalem · EPSS observation updated
Stored EPSS snapshot at this observation.
{
"date": "2026-11-02",
"epss": 0.99944,
"percentile": 0.99973
}03 Nov 2026, 02:22 Jerusalem · CISA KEV status changed
Stored KEV snapshot at this observation.
{
"cveID": "CVE-2022-30525",
"cwes": [
"CWE-78"
],
"dateAdded": "2022-05-16",
"dueDate": "2022-06-06",
"forensicTriage": "No",
"knownRansomwareCampaignUse": "Unknown",
"notes": "https://nvd.nist.gov/vuln/detail/CVE-2022-30525",
"product": "Multiple Firewalls",
"requiredAction": "Apply updates per vendor instructions.",
"shortDescription": "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.",
"vendorProject": "Zyxel",
"vulnerabilityName": "Zyxel Multiple Firewalls OS Command Injection Vulnerability"
}