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CVE-2022-3480

Denial-of-Service vulnerability in PHOENIX CONTACT mGuard product family

High7.5EPSS 0.93%
Published
Updated
Reserved
Assigned by
CERTVDE

Description

A remote, unauthenticated attacker could cause a denial-of-service of PHOENIX CONTACT FL MGUARD and TC MGUARD devices below version 8.9.0 by sending a larger number of unauthenticated HTTPS connections originating from different source IP’s. Configuring firewall limits for incoming connections cannot prevent the issue.

Scores

CVSS scores of CVE-2022-3480, by who scored it
Scored byCVSSScoreVector
CERTVDECNA (assigner)3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVDNVD · Modified3.1High7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS (exploitation in 30 days)
0.93% · top 39% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.

Weakness

Affected products

What to do

Solution: Upgrade to firmware version >= 8.9.0

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .