What is CVE-2021-20729?

CVE-2021-20729 is a medium-severity vulnerability in Netgate Pfsense_plus, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-03-31.

How severe is CVE-2021-20729?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Netgate Pfsense_plus

CVE-2021-20729

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…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.028 (84.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Netgate Pfsense_plus
Pfsense
Pfsense Ce And Plus — versions pfSense CE software versions 2.5.2 and earlier, and pfSense Plus software versions 21.05 and earlier

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

vultures@jpcert.or.jp (Third Party Advisory, x_refsource_MISC)
vultures@jpcert.or.jp (VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-20729?: CVE-2021-20729 is a medium-severity vulnerability in Netgate Pfsense_plus, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2022-03-31.
How severe is CVE-2021-20729?: Medium severity. CVSS v3 base score is 6.1 out of 10.