Is CVE-2021-27230 in the CISA KEV catalog?

No. CVE-2021-27230 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-27230?

CVE-2021-27230 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-27230?

CVE-2021-27230 has an EPSS score of 2.83% (85th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-27230?

Upgrade expressionengine to 6.0.3 or later.

CVE & CISA-KEV Catalog

CVE-2021-27230

HIGHEPSS 85th pctl

8.8

CVSS v3

NVD

Description

ExpressionEngine before 5.4.2 and 6.x before 6.0.3 allows PHP Code Injection by certain authenticated users who can leverage Translate::save() to write to an _lang.php file under the system/user/language directory.

CWE-94Code Injection

How to fix

Remediation Available

expressionengineNVD

Affected:>= 6.0.0, < 6.0.3Fixed in:6.0.3CVE-2021-27230derived 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 RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

2.83%probability of exploitation in 30 days

85thpercentile

Elevated risk: more likely to be exploited than 85% of all known CVEs.

References

Exploit2

Vendor Advisory1

expressionengine.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-94 (Code Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2017-9841	Critical	9.8	100%	KEV	Fix
CVE-2015-1635	Critical	9.8	100%	KEV	-
CVE-2022-22954	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-22204	Medium	6.8	100%	KEV	Fix
CVE-2025-3248	Critical	9.8	100%	KEV	Fix
CVE-2012-0158	High	8.8	100%	KEV	-

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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.