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HIGH · 8.1

CVE-2021-34595

A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-serv...

Vulnerability Description

A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-service condition or local memory overwrite.

CVSS Score

8.1

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
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-823CWE-119

References

FAQ

What is CVE-2021-34595?

CVE-2021-34595 is a vulnerability with a CVSS score of 8.1 (HIGH). A crafted request with invalid offsets may cause an out-of-bounds read or write access in CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56, resulting in a denial-of-serv...

How severe is CVE-2021-34595?

CVE-2021-34595 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-34595?

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.