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CVE-2021-43081

MEDIUMCVSS 6.1/10EPSS 0.79%

Last modified

CVE-2021-43081 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS version 7.0.3 and below, 6.4.8 and below, 6.2.10 and below, 6.0.14 to 6.0.0. and in FortiProxy version 7.0.1 and below, 2.0.7 to 2.0.0 web filter override form may allow an unauthenticated attacker to perform an XSS attack via crafted HTTP GET requests.. EPSS estimates a 0.79% chance of exploitation in the next 30 days.

Description

An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS version 7.0.3 and below, 6.4.8 and below, 6.2.10 and below, 6.0.14 to 6.0.0. and in FortiProxy version 7.0.1 and below, 2.0.7 to 2.0.0 web filter override form may allow an unauthenticated attacker to perform an XSS attack via crafted HTTP GET requests.

Metrics

CVSS 3.1
6.1/10

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

EPSS Probability
0.79%

51.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
FortinetFortiproxy>= 2.0.0, < 2.0.8
FortinetFortiproxy>= 7.0.0, < 7.0.2
FortinetFortios>= 6.0.0, <= 6.0.14
FortinetFortios>= 6.2.0, <= 6.2.10
FortinetFortios>= 6.4.0, < 6.4.9
FortinetFortios>= 7.0.0, < 7.0.4

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-43081?
An improper neutralization of input during web page generation vulnerability [CWE-79] in FortiOS version 7.0.3 and below, 6.4.8 and below, 6.2.10 and below, 6.0.14 to 6.0.0. and in FortiProxy version 7.0.1 and below, 2.0.7 to 2.0.0 web filter override form may allow an unauthenticated attacker to perform an XSS attack via crafted HTTP GET requests.
How severe is CVE-2021-43081?
CVE-2021-43081 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.79% probability of exploitation in the next 30 days.
How do I fix CVE-2021-43081?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-43081?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST