Is CVE-2019-5420 in the CISA KEV catalog?

No. CVE-2019-5420 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-5420?

CVE-2019-5420 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2019-5420?

CVE-2019-5420 has an EPSS score of 92.14% (100th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-5420?

Upgrade rails on debian 11 to 2:5.2.2.1+dfsg-1 or later.

CVE & CISA-KEV Catalog

CVE-2019-5420

CRITICALEPSS 100th pctl

9.8

CVSS v3

NVD

Description

A remote code execution vulnerability in development mode Rails <5.2.2.1, <6.0.0.beta3 can allow an attacker to guess the automatically generated development mode secret token. This secret token can be used in combination with other Rails internals to escalate to a remote code execution exploit.

CWE-77Command Injection CWE-330

How to fix

Remediation Available

railsDebian

Fixed in:2:5.2.2.1+dfsg-1CVE-2019-5420

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

92.14%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

Patch1

weblog.rubyonrails.org

Exploit2

Other references2

Related Vulnerabilities

Other CWE-77 (Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3400	Critical	10.0	100%	KEV + Ransom	-
CVE-2024-21887	Critical	9.1	100%	KEV + Ransom	-
CVE-2023-1671	Critical	9.8	100%	KEV	Fix
CVE-2023-1389	High	8.8	100%	KEV	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2012-1823	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.