CVE-2022-30526

HIGHNVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2022-07-20. NVD baseline CVSS 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
7.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • Public exploit code is available (Metasploit, public exploit)
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.8Exploit: Metasploit · public exploitExposed: 0

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

A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W) firmware versions 4.16 through 5.30, USG20(W)-VPN firmware versions 4.16 through 5.30, ATP series firmware versions 4.32 through 5.30, VPN series firmware versions 4.30 through 5.30, USG/ZyWALL series firmware versions 4.09 through 4.72, which could allow a local attacker to execute some OS commands with root privileges in some directories on a vulnerable device.

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
66(Track)
EG Risk 66/100SSVC: Track

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
Severity78% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
63%
KEV
Not listed

Published

July 19, 2022

Last Modified

November 21, 2024

References (4)

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 46× 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 113 total refreshes for this CVE.

  1. 2026-07-25 14:15 UTCEPSS rescore
  2. 2026-07-24 14:15 UTCEPSS rescore
  3. 2026-07-24 14:15 UTCEPSS rescore
  4. 2026-07-23 14:16 UTCEPSS rescore
  5. 2026-07-23 14:16 UTCEPSS rescore
  6. 2026-07-23 02:10 UTCEG score recompute
  7. 2026-07-22 22:58 UTCEG score recompute
  8. 2026-07-22 14:06 UTCEPSS rescore
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  10. 2026-07-21 15:22 UTCEPSS rescore
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  12. 2026-07-20 17:05 UTCEPSS rescore
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  24. 2026-07-13 06:11 UTCEPSS rescore
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  1. 2026-07-12 05:44 UTCEPSS rescore
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  3. 2026-07-11 08:25 UTCEPSS rescore
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  5. 2026-07-09 19:07 UTCEPSS rescore
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  7. 2026-07-07 13:44 UTCEPSS rescore
  8. 2026-07-06 16:25 UTCEPSS rescore
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  10. 2026-07-06 02:21 UTCEPSS rescore
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  19. 2026-06-29 14:04 UTCEPSS rescore
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  21. 2026-06-28 04:54 UTCEPSS rescore
  22. 2026-06-27 03:07 UTCEPSS rescore
  23. 2026-06-25 13:48 UTCEPSS rescore
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  25. 2026-06-24 14:03 UTCEPSS rescore
  26. 2026-06-24 14:03 UTCEPSS rescore
  27. 2026-06-23 21:31 UTCEPSS rescore
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  29. 2026-06-22 14:24 UTCEPSS rescore
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  31. 2026-06-21 14:55 UTCEPSS rescore
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  35. 2026-06-19 19:24 UTCEPSS rescore
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  37. 2026-06-18 17:51 UTCEPSS rescore
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  40. 2026-06-17 17:51 UTCEPSS rescore
  41. 2026-06-16 17:51 UTCEPSS rescore
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  43. 2026-06-15 17:46 UTCEPSS rescore
  44. 2026-06-14 23:15 UTCEPSS rescore
  45. 2026-06-13 22:58 UTCEPSS rescore
  46. 2026-06-12 23:10 UTCEPSS rescore
  47. 2026-06-12 23:10 UTCEPSS rescore
  48. 2026-06-11 13:58 UTCEPSS rescore
  49. 2026-06-11 13:58 UTCEPSS rescore
  50. 2026-06-10 22:16 UTCEPSS rescore
  51. 2026-06-10 13:20 UTCEPSS rescore
  52. 2026-06-08 14:15 UTCEPSS rescore
  53. 2026-06-08 14:15 UTCEPSS rescore
  54. 2026-06-07 15:23 UTCEPSS rescore
  55. 2026-06-07 15:23 UTCEPSS rescore
  56. 2026-06-07 15:23 UTCEPSS rescore
  57. 2026-06-06 13:46 UTCEPSS rescore
  58. 2026-06-06 13:46 UTCEPSS rescore
  59. 2026-06-05 22:45 UTCEPSS rescore
  60. 2026-06-05 22:45 UTCEPSS rescore
  61. 2026-06-05 06:09 UTCEPSS rescore
  62. 2026-06-05 06:09 UTCEPSS rescore
  63. 2026-06-04 13:11 UTCEPSS rescore
  64. 2026-06-04 13:11 UTCEPSS rescore
  65. 2026-06-02 20:11 UTCEPSS rescore
  66. 2026-06-02 20:11 UTCEPSS rescore
  67. 2026-06-02 20:11 UTCEPSS rescore
  68. 2026-06-01 13:50 UTCEPSS rescore
  69. 2026-06-01 13:50 UTCEPSS rescore
  70. 2026-05-31 22:29 UTCEPSS rescore
  71. 2026-05-31 22:29 UTCEPSS rescore
  72. 2026-05-31 22:29 UTCEPSS rescore
  73. 2026-05-31 00:15 UTCEPSS rescore
  74. 2026-05-31 00:15 UTCEPSS rescore
  75. 2026-05-29 13:43 UTCEPSS rescore

Publicly available exploits

(1 reference)

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

  • Metasploitexploit/linux/local/zyxel_suid_cp_lpe✓ verified
    First seen Jun 14, 2022

    Zyxel Firewall SUID Binary Privilege Escalation

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2022-30526?
CVE-2022-30526 is a high vulnerability published on July 19, 2022. A privilege escalation vulnerability was identified in the CLI command of Zyxel USG FLEX 100(W) firmware versions 4.50 through 5.30, USG FLEX 200 firmware versions 4.50 through 5.30, USG FLEX 500 firmware versions 4.50 through 5.30, USG FLEX 700 firmware versions 4.50 through 5.30, USG FLEX 50(W)…
When was CVE-2022-30526 disclosed?
CVE-2022-30526 was first published in the National Vulnerability Database on July 19, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2022-30526 actively exploited?
CVE-2022-30526 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 37.1% of all scored CVEs.
What is the CVSS score of CVE-2022-30526?
CVE-2022-30526 has a CVSS v3 base score of 7.8 (NVD).
How do I remediate CVE-2022-30526?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2022-30526, 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

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