Is CVE-2022-27491 in the CISA KEV catalog?

No. CVE-2022-27491 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-27491?

CVE-2022-27491 has a CVSS v3 base score of 6.8 (MEDIUM).

What is the EPSS score for CVE-2022-27491?

CVE-2022-27491 has an EPSS score of 1.22% (65th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-27491?

Upgrade fortios to 7.0.6 or later.

CVE & CISA-KEV Catalog

CVE-2022-27491

MEDIUM

6.8

CVSS v3

NVD

Description

A improper verification of source of a communication channel in Fortinet FortiOS with IPS engine version 7.201 through 7.214, 7.001 through 7.113, 6.001 through 6.121, 5.001 through 5.258 and before 4.086 allows a remote and unauthenticated attacker to trigger the sending of "blocked page" HTML data to an arbitrary victim via crafted TCP requests, potentially flooding the victim.

How to fix

Remediation Available

fortiosNVD

Affected:>= 7.0.0, < 7.0.6Fixed in:7.0.6CVE-2022-27491derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.22%probability of exploitation in 30 days

65thpercentile

Moderate risk: more likely to be exploited than 65% of all known CVEs.

References

Vendor Advisory1

fortiguard.com

Embed a live status badge for CVE-2022-27491

Markdown

[![CVE-2022-27491](https://tridentstack.com/cve/badge/CVE-2022-27491.svg)](https://tridentstack.com/cve/CVE-2022-27491)

HTML

<a href="https://tridentstack.com/cve/CVE-2022-27491"><img src="https://tridentstack.com/cve/badge/CVE-2022-27491.svg" alt="CVE-2022-27491"></a>

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.