Is CVE-2021-23128 in the CISA KEV catalog?

No. CVE-2021-23128 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-23128?

CVE-2021-23128 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2021-23128?

CVE-2021-23128 has an EPSS score of 1.57% (72th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-23128?

Upgrade joomla\! to 3.9.25 or later.

CVE & CISA-KEV Catalog

CVE-2021-23128

CRITICALEPSS 72th pctl

9.1

CVSS v3

NVD

Description

An issue was discovered in Joomla! 3.2.0 through 3.9.24. The core shipped but unused randval implementation within FOF (FOFEncryptRandval) used an potential insecure implemetation. That has now been replaced with a call to 'random_bytes()' and its backport that is shipped within random_compat.

How to fix

Remediation Available

joomla\!NVD

Affected:>= 3.2.0, < 3.9.25Fixed in:3.9.25CVE-2021-23128derived from NVD

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

AvailabilityNone

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

Exploit Intelligence

1.57%probability of exploitation in 30 days

72ndpercentile

Elevated risk: more likely to be exploited than 72% of all known CVEs.

References

Vendor Advisory1

developer.joomla.org

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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.