CVE-2021-20729

moderate-risk
Published 2022-03-31

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.

Do I need to act?

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0.31% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.1/10 Medium
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Pfsense Netgate

References (4)

Third Party Advisory https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.asc
Third Party Advisory https://jvn.jp/en/jp/JVN87751554/index.html
Third Party Advisory https://docs.netgate.com/downloads/pfSense-SA-21_02.captiveportal.asc
Third Party Advisory https://jvn.jp/en/jp/JVN87751554/index.html
31
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 1/34 · Minimal
Exposure 7/34 · Low