CVE-2021-20729

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Published Mar 31, 2022 CVSS 3.1 · 6.1 Medium EPSS 2.9% KEV · Not listed

Description

Cross-site scripting vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier) allows a remote attacker to inject an arbitrary script via a malicious URL.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

pfSense

pfSense CE and pfSense Plus

affected

Version	Status	Constraints
`pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier`	affected	—

Configuration 1 [-]

OR	cpe:2.3:a:netgate:pfsense_plus::::::::
	cpe:2.3:a:pfsense:pfsense:::::community:::*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source	ID	Title
EUVD	EUVD-2021-8143	Cross-site scripting vulnerability in pfSense CE and pfSense Plus (pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier) allows a remote attacker to inject an arbitrary script via a malicious URL.

Metrics

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Exploit prediction score: 2.9% (2.878% probability within 30 days)

Key SSVC decision points have not yet been added.

References

Link	Providers
https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.asc
https://jvn.jp/en/jp/JVN87751554/index.html

History

No history.

Subscriptions

Netgate Pfsense Plus

Pfsense Pfsense

Weaknesses

CWE-79

Sources

CVE record Updated: Aug 3, 2024, 5:53 PM

Status: PUBLISHED
Assigner: jpcert
Published: Mar 31, 2022, 7:20 AM
Updated: Aug 3, 2024, 5:53 PM
Reserved: Dec 17, 2020, 12:00 AM

View source JSON

Vulnrichment No data

No data.

NVD Updated: Jun 17, 2026, 3:34 AM

Status: Modified
Published: Mar 31, 2022, 8:15 AM
Modified: Jun 17, 2026, 3:34 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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