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CVE-2021-21000

HIGHCVSS 7.5/10EPSS 1.04%

Last modified

CVE-2021-21000 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On WAGO PFC200 devices in different firmware versions with special crafted packets an attacker with network access to the device could cause a denial of service for the login service of the runtime.. EPSS estimates a 1.04% chance of exploitation in the next 30 days.

Description

On WAGO PFC200 devices in different firmware versions with special crafted packets an attacker with network access to the device could cause a denial of service for the login service of the runtime.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
1.04%

59.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Wago750-823 Firmware< fw08
Wago750-829 Firmware< fw15
Wago750-831 Firmware< fw15
Wago750-832 Firmware< fw08
Wago750-852 Firmware< fw15
Wago750-862 Firmware< fw08
Wago750-880 Firmware< fw16
Wago750-881 Firmware< fw15
Wago750-882 Firmware< fw15
Wago750-885 Firmware< fw15
Wago750-889 Firmware< fw15
Wago750-890 Firmware< fw08
Wago750-891 Firmware< fw08
Wago750-893 Firmware< fw08
Wago750-8202 Firmware< 03.06.19_\(18\)
Wago750-8203 Firmware< 03.06.19_\(18\)
Wago750-8204 Firmware< 03.06.19_\(18\)
Wago750-8206 Firmware< 03.06.19_\(18\)
Wago750-8207 Firmware< 03.06.19_\(18\)
Wago750-8208 Firmware< 03.06.19_\(18\)
Wago750-8210 Firmware< 03.06.19_\(18\)
Wago750-8211 Firmware< 03.06.19_\(18\)
Wago750-8212 Firmware< 03.06.19_\(18\)
Wago750-8213 Firmware< 03.06.19_\(18\)
Wago750-8214 Firmware< 03.06.19_\(18\)
Wago750-8216 Firmware< 03.06.19_\(18\)
Wago750-8217 Firmware< 03.06.19_\(18\)

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2021-21000?
On WAGO PFC200 devices in different firmware versions with special crafted packets an attacker with network access to the device could cause a denial of service for the login service of the runtime.
How severe is CVE-2021-21000?
CVE-2021-21000 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.04% probability of exploitation in the next 30 days.
How do I fix CVE-2021-21000?
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-2021-21000?

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

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Source: NVD / NIST