CVE-2020-5777

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 23.3%, top 2% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 3 sources updated this weekElevated
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 23%CVSS: 9.8Exploit: NoneExposed: 0

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

MAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or another web server) setting MaxRequestWorkers (formerly MaxClients) (default 256). This can be done by sending at least 151 simultaneous requests to the Magento website to trigger a "Too many connections" error, then use default magmi:magmi basic authentication to remotely bypass authentication.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
65(Track*)
EG Risk 65/100SSVC: 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
Severity98% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
97.5%
KEV
Not listed

Published

September 1, 2020

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 21, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

MAGMI Multiple Vulnerabilities - Research Advisory | Tenable®

https://www.tenable.com/security/research/tra-2020-51

Affected Packages

(1 across 1 ecosystem)
Packagist(1)
PackageVulnerable rangeFixed inDependents
dweeves/magmi0.7.19, 0.7.19a, 0.7.20, 0.7.21, 0.7.220.7.24—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 14× in last 7d / 50× 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 01:54 UTCEG score recompute
  2. 2026-07-22 22:40 UTCEG score recompute
  3. 2026-07-22 14:05 UTCEPSS rescore
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  37. 2026-06-13 19:43 UTCOSV refresh
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  56. 2026-05-28 13:43 UTCEPSS rescore
  57. 2026-05-26 23:36 UTCEG score recompute

Publicly available exploits

(1 reference)

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

  • Nucleihttp/cves/2020/CVE-2020-5777.yaml
    First seen Jan 1, 2020

    Magento Mass Importer <0.7.24 - Remote Auth Bypass

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2020-5777?
CVE-2020-5777 is a critical vulnerability published on September 1, 2020. MAGMI versions prior to 0.7.24 are vulnerable to a remote authentication bypass due to allowing default credentials in the event there is a database connection failure. A remote attacker can trigger this connection failure if the Mysql setting max_connections (default 151) is lower than Apache (or…
When was CVE-2020-5777 disclosed?
CVE-2020-5777 was first published in the National Vulnerability Database on September 1, 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-2020-5777 actively exploited?
CVE-2020-5777 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 97.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2020-5777?
CVE-2020-5777 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2020-5777?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-5777, 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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