CVE-2021-20729 — MEDIUM (6.1)

Q: How severe is CVE-2021-20729?

CVE-2021-20729 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2021-20729?

Check the references section above for vendor advisories and patch information. Affected products include: Netgate Pfsense Plus, Pfsense Pfsense.

Vulnerability 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.

CVSS Score

6.1

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Netgate	Pfsense Plus	<= 21.05
Pfsense	Pfsense	<= 2.5.2

Related Weaknesses (CWE)

CWE-79

References

https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.ascThird Party Advisory
https://jvn.jp/en/jp/JVN87751554/index.htmlThird Party AdvisoryVDB Entry
https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.ascThird Party Advisory
https://jvn.jp/en/jp/JVN87751554/index.htmlThird Party AdvisoryVDB Entry

FAQ

What is CVE-2021-20729?

CVE-2021-20729 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 inj...

How severe is CVE-2021-20729?

CVE-2021-20729 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-20729?

Check the references section above for vendor advisories and patch information. Affected products include: Netgate Pfsense Plus, Pfsense Pfsense.