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HIGH · 7.5

CVE-2021-34585

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an inval...

Vulnerability Description

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of service situation.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
Wago750-823 Firmware< fw10
Wago750-823-
Wago750-829 Firmware< fw17
Wago750-829-
Wago750-831 Firmware< fw17
Wago750-831-
Wago750-832 Firmware< fw10
Wago750-832-
Wago750-852 Firmware< fw17
Wago750-852-
Wago750-862 Firmware< fw10
Wago750-862-
Wago750-880 Firmware< fw17
Wago750-880-
Wago750-881 Firmware< fw17
Wago750-881-
Wago750-882 Firmware< fw17
Wago750-882-
Wago750-885 Firmware< fw17
Wago750-885-

Related Weaknesses (CWE)

CWE-252

References

FAQ

What is CVE-2021-34585?

CVE-2021-34585 is a vulnerability with a CVSS score of 7.5 (HIGH). In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an inval...

How severe is CVE-2021-34585?

CVE-2021-34585 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34585?

Check the references section above for vendor advisories and patch information. Affected products include: Wago 750-823 Firmware, Wago 750-823, Wago 750-829 Firmware, Wago 750-829, Wago 750-831 Firmware.