Is CVE-2021-4282 in the CISA KEV catalog?

No. CVE-2021-4282 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-4282?

CVE-2021-4282 has a CVSS v3 base score of 3.5 (LOW).

What is the EPSS score for CVE-2021-4282?

CVE-2021-4282 has an EPSS score of 0.52% (40th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-4282?

Upgrade voicemail to 14.0.6.25 or later.

CVE & CISA-KEV Catalog

CVE-2021-4282

LOW

3.5

CVSS v3

NVD

Description

A vulnerability was found in FreePBX voicemail. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file page.voicemail.php. The manipulation leads to cross site scripting. The attack can be launched remotely. Upgrading to version 14.0.6.25 is able to address this issue. The name of the patch is 12e1469ef9208eda9d8955206e78345949236ee6. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-216871.

CWE-79Cross-Site Scripting (XSS)

How to fix

Remediation Available

voicemailNVD

Affected:< 14.0.6.25Fixed in:14.0.6.25CVE-2021-4282derived 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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.52%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory3

Related Vulnerabilities

Other CWE-79 (Cross-Site Scripting (XSS)) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-11022	Medium	6.9	99%	-	Fix
CVE-2019-3929	Critical	9.8	99%	KEV	Fix
CVE-2020-9496	Medium	6.1	99%	-	-
CVE-2023-28341	Medium	6.1	99%	-	Fix
CVE-2018-12998	Medium	6.1	98%	-	-
CVE-2025-4123	High	7.6	98%	-	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.