CVE-2018-5521

moderate-risk
Published 2018-06-01

On F5 BIG-IP 12.1.0-12.1.3.1, 11.6.1-11.6.3.1, 11.5.1-11.5.5, or 11.2.1, carefully crafted URLs can be used to reflect arbitrary content into GeoIP lookup responses, potentially exposing clients to XSS.

Do I need to act?

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0.34% 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 Vendors

F5
45
/ 100
moderate-risk
Severity 23/34 · High
Exploitability 1/34 · Minimal
Exposure 21/34 · High