CVE-2022-30525

CRITICALNVD 9.89.8—
EchelonGraph scoreHIGH confidence

Score elevated to 9.8 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2022-05-16), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.8 retained for reference. Confidence: HIGH.

Triggered by: CISA KEV (actively exploited)
Sources: cisa_kev, epss, ghsa, nvd
Trending — 4 sources updated this weekExploited in the wild
9.8
EchelonGraph verdictPatch nowTreat as an emergency — this is being exploited.
  • Actively exploited in the wild (CISA-KEV)
CISA-KEV: ExploitedEPSS: 100%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
9.8
EG Score
9.8(high)
EG Risk
99(Act)
EG Risk 99/100SSVC: Act

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation100% × 40%
Automatability100% × 15%
Action: Fix now — active exploitation, automatable, high impact.
EPSS
100.0%
KEV
⚠ Exploited

Published

May 12, 2022

Last Modified

October 27, 2025

Advisory Details (4)

Auto-updated Jun 1, 2026
No patch confirmed yet.
generic

Support Download Page Redirect

https://www.zyxel.com/support/Zyxel-security-advisory-for-OS-command-injection-vulnerability-of-firewalls.shtml
generic

Packet Storm

http://packetstormsecurity.com/files/168202/Zyxel-Firewall-SUID-Binary-Privilege-Escalation.html
generic

Packet Storm

http://packetstormsecurity.com/files/167182/Zyxel-Firewall-ZTP-Unauthenticated-Command-Injection.html
generic

Packet Storm

http://packetstormsecurity.com/files/167176/Zyxel-Remote-Command-Execution.html

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 33× in last 7d / 185× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 358 total refreshes for this CVE.

  1. 2026-07-24 14:15 UTCEPSS rescore
  2. 2026-07-24 14:15 UTCEPSS rescore
  3. 2026-07-23 02:10 UTCEG score recompute
  4. 2026-07-22 22:58 UTCEG score recompute
  5. 2026-07-22 21:06 UTCGHSA enrichment
  6. 2026-07-22 19:40 UTCCISA KEV update
  7. 2026-07-22 17:05 UTCGHSA enrichment
  8. 2026-07-22 13:06 UTCGHSA enrichment
  9. 2026-07-22 09:06 UTCGHSA enrichment
  10. 2026-07-22 05:06 UTCGHSA enrichment
  11. 2026-07-22 01:06 UTCGHSA enrichment
  12. 2026-07-21 21:07 UTCGHSA enrichment
  13. 2026-07-21 17:06 UTCGHSA enrichment
  14. 2026-07-21 14:37 UTCCISA KEV update
  15. 2026-07-21 13:06 UTCGHSA enrichment
  16. 2026-07-21 09:07 UTCGHSA enrichment
  17. 2026-07-21 05:08 UTCGHSA enrichment
  18. 2026-07-21 01:08 UTCGHSA enrichment
  19. 2026-07-20 21:08 UTCGHSA enrichment
  20. 2026-07-20 17:07 UTCGHSA enrichment
  21. 2026-07-20 13:06 UTCGHSA enrichment
  22. 2026-07-20 09:06 UTCGHSA enrichment
  23. 2026-07-20 05:05 UTCGHSA enrichment
  24. 2026-07-19 21:07 UTCGHSA enrichment
  25. 2026-07-19 17:08 UTCGHSA enrichment
Show 75 more
  1. 2026-07-19 13:09 UTCGHSA enrichment
  2. 2026-07-19 09:10 UTCGHSA enrichment
  3. 2026-07-19 05:11 UTCGHSA enrichment
  4. 2026-07-19 01:11 UTCGHSA enrichment
  5. 2026-07-18 21:12 UTCGHSA enrichment
  6. 2026-07-18 17:13 UTCGHSA enrichment
  7. 2026-07-18 13:13 UTCGHSA enrichment
  8. 2026-07-18 09:13 UTCGHSA enrichment
  9. 2026-07-18 05:14 UTCGHSA enrichment
  10. 2026-07-18 01:14 UTCGHSA enrichment
  11. 2026-07-17 21:15 UTCGHSA enrichment
  12. 2026-07-17 17:16 UTCGHSA enrichment
  13. 2026-07-17 13:15 UTCGHSA enrichment
  14. 2026-07-17 09:16 UTCEG score recompute
  15. 2026-07-17 09:16 UTCGHSA enrichment
  16. 2026-07-17 05:16 UTCGHSA enrichment
  17. 2026-07-17 01:16 UTCGHSA enrichment
  18. 2026-07-17 01:14 UTCGHSA enrichment
  19. 2026-07-16 21:15 UTCGHSA enrichment
  20. 2026-07-16 17:15 UTCGHSA enrichment
  21. 2026-07-16 17:04 UTCCISA KEV update
  22. 2026-07-16 13:15 UTCGHSA enrichment
  23. 2026-07-16 09:16 UTCGHSA enrichment
  24. 2026-07-16 05:17 UTCGHSA enrichment
  25. 2026-07-16 01:18 UTCGHSA enrichment
  26. 2026-07-15 21:19 UTCGHSA enrichment
  27. 2026-07-15 17:19 UTCGHSA enrichment
  28. 2026-07-15 16:49 UTCCISA KEV update
  29. 2026-07-15 15:04 UTCCISA KEV update
  30. 2026-07-15 13:16 UTCGHSA enrichment
  31. 2026-07-15 09:17 UTCGHSA enrichment
  32. 2026-07-15 05:18 UTCGHSA enrichment
  33. 2026-07-15 01:19 UTCGHSA enrichment
  34. 2026-07-14 21:19 UTCGHSA enrichment
  35. 2026-07-14 18:05 UTCCISA KEV update
  36. 2026-07-14 17:20 UTCGHSA enrichment
  37. 2026-07-14 13:21 UTCGHSA enrichment
  38. 2026-07-14 09:21 UTCGHSA enrichment
  39. 2026-07-14 05:21 UTCGHSA enrichment
  40. 2026-07-14 01:22 UTCGHSA enrichment
  41. 2026-07-13 21:23 UTCGHSA enrichment
  42. 2026-07-13 17:23 UTCGHSA enrichment
  43. 2026-07-13 17:07 UTCCISA KEV update
  44. 2026-07-13 13:24 UTCGHSA enrichment
  45. 2026-07-13 09:25 UTCGHSA enrichment
  46. 2026-07-13 05:26 UTCGHSA enrichment
  47. 2026-07-13 01:27 UTCGHSA enrichment
  48. 2026-07-12 21:28 UTCGHSA enrichment
  49. 2026-07-12 17:29 UTCGHSA enrichment
  50. 2026-07-12 13:30 UTCGHSA enrichment
  51. 2026-07-12 09:31 UTCGHSA enrichment
  52. 2026-07-12 05:31 UTCGHSA enrichment
  53. 2026-07-12 01:31 UTCGHSA enrichment
  54. 2026-07-11 21:32 UTCGHSA enrichment
  55. 2026-07-11 17:33 UTCGHSA enrichment
  56. 2026-07-11 13:34 UTCGHSA enrichment
  57. 2026-07-11 09:34 UTCGHSA enrichment
  58. 2026-07-11 05:35 UTCGHSA enrichment
  59. 2026-07-11 01:35 UTCGHSA enrichment
  60. 2026-07-10 21:35 UTCGHSA enrichment
  61. 2026-07-10 17:52 UTCCISA KEV update
  62. 2026-07-10 17:36 UTCGHSA enrichment
  63. 2026-07-10 13:37 UTCGHSA enrichment
  64. 2026-07-10 09:38 UTCGHSA enrichment
  65. 2026-07-10 05:37 UTCGHSA enrichment
  66. 2026-07-10 01:38 UTCGHSA enrichment
  67. 2026-07-09 21:39 UTCGHSA enrichment
  68. 2026-07-09 19:07 UTCEPSS rescore
  69. 2026-07-09 17:40 UTCGHSA enrichment
  70. 2026-07-09 13:41 UTCGHSA enrichment
  71. 2026-07-09 09:41 UTCGHSA enrichment
  72. 2026-07-09 05:42 UTCGHSA enrichment
  73. 2026-07-09 01:43 UTCGHSA enrichment
  74. 2026-07-08 21:44 UTCGHSA enrichment
  75. 2026-07-08 17:44 UTCGHSA enrichment

Publicly available exploits

(10 references)

Working exploit code is in the public domain (9 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoCcbk914/CVE-2022-30525_check
    First seen Jan 15, 2023
    Open source ↗
  • Exploit-DBEDB-50946
    First seen Jun 3, 2022

    Zyxel USG FLEX 5.21 - OS Command Injection

    Open source ↗
  • GitHub PoCwest9b/CVE-2022-30525
    First seen May 28, 2022

    CVE-2022-30525 Zyxel 防火墙命令注入漏洞 POC&EXPC

    Open source ↗
  • GitHub PoCiveresk/cve-2022-30525
    First seen May 23, 2022

    Initial POC for the CVE-2022-30525

    Open source ↗
  • GitHub PoCChocapikk/CVE-2022-30525-Reverse-Shell
    First seen May 18, 2022

    Simple python script to exploit CVE-2022-30525 (FIXED): Zyxel Firewall Unauthenticated Remote Command Injection

    Open source ↗
  • GitHub PoCk0sf/CVE-2022-30525
    First seen May 16, 2022

    CVE-2022-30525（Zxyel 防火墙命令注入）的概念证明漏洞利用

    Open source ↗
  • GitHub PoCshuai06/CVE-2022-30525
    First seen May 13, 2022

    Zyxel 防火墙远程命令注入漏洞（CVE-2022-30525）批量检测脚本

    Open source ↗
  • GitHub PoCHenry4E36/CVE-2022-30525
    First seen May 13, 2022

    Zyxel 防火墙远程命令注入漏洞（CVE-2022-30525）

    Open source ↗
  • GitHub PoCsavior-only/CVE-2022-30525
    First seen May 13, 2022

    Zyxel 防火墙未经身份验证的远程命令注入

    Open source ↗
  • GitHub PoCjbaines-r7/victorian_machinery
    First seen May 10, 2022

    Proof of concept exploit for CVE-2022-30525 (Zxyel firewall command injection)

    Open source ↗

Related CVEs(same CWE)

Frequently asked(6)

What is CVE-2022-30525?
CVE-2022-30525 is a critical vulnerability published on May 12, 2022. 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,…
When was CVE-2022-30525 disclosed?
CVE-2022-30525 was first published in the National Vulnerability Database on May 12, 2022, with the most recent update on October 27, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-30525 actively exploited?
Yes. CISA added CVE-2022-30525 to the Known Exploited Vulnerabilities catalog on May 16, 2022, affecting Zyxel Multiple Firewalls. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.
What is the CVSS score of CVE-2022-30525?
CVE-2022-30525 has a CVSS v3 base score of 9.8 (NVD).
Which products are affected by CVE-2022-30525?
CVE-2022-30525 affects Zyxel Multiple Firewalls. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.
How do I remediate CVE-2022-30525?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-30525, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2022-30525

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