CVE-2020-7357

CRITICALNVD 9.69.9▲
EchelonGraph scoreMEDIUM confidence

Score 9.9 from GitHub Security Advisory (severity: HIGH) published 2022-05-24. NVD baseline CVSS 9.6; sources differ by 0.3.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 34%CVSS: 9.6Exploit: NoneExposed: 0

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

Cayin CMS suffers from an authenticated OS semi-blind command injection vulnerability using default credentials. This can be exploited to inject and execute arbitrary shell commands as the root user through the 'NTP_Server_IP' HTTP POST parameter in system.cgi page. This issue affects several branches and versions of the CMS application, including CME-SE, CMS-60, CMS-40, CMS-20, and CMS version 8.2, 8.0, and 7.5.

CVSS v3
9.6
EG Score
9.9(medium)
EG Risk
75(Track*)
EG Risk 75/100SSVC: 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
Severity99% × 45%
Exploitation65% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
98.2%
KEV
Not listed

Published

August 6, 2020

Last Modified

November 21, 2024

Advisory Details (3)

Auto-updated Jul 14, 2026
⚠️ Active exploitation confirmed. Upstream fix merged — awaiting tagged release. Sources: github_pr.
generic🔴 Active Exploitation

Zero Science Lab — Information Security Research & Development Laboratory

https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5570.php
github_pr

Cayin xPost and CMS exploits

Fix merged in rapid7/metasploit-framework PR #13607 on 2020-06-18 — awaiting tagged release

https://github.com/rapid7/metasploit-framework/pull/13607
generic

IBM X-Force Exchange

https://exchange.xforce.ibmcloud.com/vulnerabilities/182925

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 36× 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.

  1. 2026-07-23 14:15 UTCEPSS rescore
  2. 2026-07-23 01:54 UTCEG score recompute
  3. 2026-07-22 22:41 UTCEG score recompute
  4. 2026-07-22 14:05 UTCEPSS rescore
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  1. 2026-07-04 06:29 UTCEPSS rescore
  2. 2026-07-02 16:57 UTCEPSS rescore
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  4. 2026-06-28 04:54 UTCEPSS rescore
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  6. 2026-06-27 03:06 UTCEPSS rescore
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  8. 2026-06-25 13:48 UTCEPSS rescore
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  10. 2026-06-24 14:03 UTCEPSS rescore
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  16. 2026-06-18 17:51 UTCEPSS rescore
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  21. 2026-06-14 23:15 UTCEPSS rescore
  22. 2026-06-12 23:10 UTCEPSS rescore
  23. 2026-06-12 23:10 UTCEPSS rescore
  24. 2026-06-11 13:58 UTCEPSS rescore
  25. 2026-06-11 13:58 UTCEPSS rescore
  26. 2026-06-10 22:16 UTCEPSS rescore
  27. 2026-06-10 13:20 UTCEPSS rescore
  28. 2026-06-08 14:15 UTCEPSS rescore
  29. 2026-06-07 15:23 UTCEPSS rescore
  30. 2026-06-07 15:23 UTCEPSS rescore
  31. 2026-06-06 13:46 UTCEPSS rescore
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  36. 2026-06-05 06:08 UTCEPSS rescore
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  38. 2026-06-02 20:11 UTCEPSS rescore
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  40. 2026-06-01 13:50 UTCEPSS rescore
  41. 2026-05-31 22:29 UTCEPSS rescore
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  43. 2026-05-31 00:15 UTCEPSS rescore
  44. 2026-05-31 00:15 UTCEPSS rescore
  45. 2026-05-29 13:42 UTCEPSS rescore
  46. 2026-05-27 00:33 UTCEG score recompute
  47. 2026-05-27 00:33 UTCGHSA enrichment
  48. 2026-05-26 13:42 UTCEPSS rescore
  49. 2026-05-26 13:42 UTCEPSS rescore
  50. 2026-05-26 07:17 UTCEPSS rescore
  51. 2026-05-26 07:17 UTCEPSS rescore
  52. 2026-05-24 21:12 UTCOSV refresh

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/http/cayin_cms_ntp✓ verified
    First seen Jun 4, 2020

    Cayin CMS NTP Server RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-7357?
CVE-2020-7357 is a critical vulnerability published on August 6, 2020. Cayin CMS suffers from an authenticated OS semi-blind command injection vulnerability using default credentials. This can be exploited to inject and execute arbitrary shell commands as the root user through the 'NTPServerIP' HTTP POST parameter in system.cgi page. This issue affects several…
When was CVE-2020-7357 disclosed?
CVE-2020-7357 was first published in the National Vulnerability Database on August 6, 2020, 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-2020-7357 actively exploited?
CVE-2020-7357 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 98.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-7357?
CVE-2020-7357 has a CVSS v3 base score of 9.6 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.9.
How do I remediate CVE-2020-7357?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-7357, 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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