CVE-2021-34584

CODESYS V2 web server: crafted requests could trigger a buffer over-read (DoS)

Published Oct 26, 2021 CVSS 3.1 · 9.1 Critical EPSS 1.1% KEV · Not listed
Description
Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.

Remediation

Vendor Solution

CODESYS GmbH has released version V1.1.9.22 of the CODESYS V2 web server to solve the noted vulnerability issues. This version of the CODESYS V2 web server is also part of the CODESYS Development System setup version V2.3.9.68.

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2021-21234 Crafted web server requests can be utilised to read partial stack or heap memory or may trigger a denial-of- service condition due to a crash in the CODESYS V2 web server prior to V1.1.9.22.
History
Type Values Removed Values Added
First Time appeared Wago
Wago 750-8202
Wago 750-8202 Firmware
Wago 750-8203
Wago 750-8203 Firmware
Wago 750-8204
Wago 750-8204 Firmware
Wago 750-8206
Wago 750-8206 Firmware
Wago 750-8207
Wago 750-8207 Firmware
Wago 750-8208
Wago 750-8208 Firmware
Wago 750-8210
Wago 750-8210 Firmware
Wago 750-8211
Wago 750-8211 Firmware
Wago 750-8212
Wago 750-8212 Firmware
Wago 750-8213
Wago 750-8213 Firmware
Wago 750-8214
Wago 750-8214 Firmware
Wago 750-8216
Wago 750-8216 Firmware
Wago 750-8217
Wago 750-8217 Firmware
Wago 750-823
Wago 750-823 Firmware
Wago 750-829
Wago 750-829 Firmware
Wago 750-831
Wago 750-831 Firmware
Wago 750-832
Wago 750-832 Firmware
Wago 750-852
Wago 750-852 Firmware
Wago 750-862
Wago 750-862 Firmware
Wago 750-880
Wago 750-880 Firmware
Wago 750-881
Wago 750-881 Firmware
Wago 750-882
Wago 750-882 Firmware
Wago 750-885
Wago 750-885 Firmware
Wago 750-889
Wago 750-889 Firmware
Wago 750-890
Wago 750-890 Firmware
Wago 750-891
Wago 750-891 Firmware
Wago 750-893
Wago 750-893 Firmware
CPEs cpe:2.3:h:wago:750-8202:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8203:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8204:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8206:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8207:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8208:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8210:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8211:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8212:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8213:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8214:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8216:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-8217:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-823:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-829:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-831:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-832:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-852:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-862:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-880:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-881:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-882:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-885:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-889:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-890:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-891:-:*:*:*:*:*:*:*
cpe:2.3:h:wago:750-893:-:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8202_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8203_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8204_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8206_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8207_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8208_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8210_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8211_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8212_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8213_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8214_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8216_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-8217_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-823_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-829_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-831_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-832_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-852_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-862_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-880_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-881_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-882_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-885_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-889_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-890_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-891_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:wago:750-893_firmware:*:*:*:*:*:*:*:*
Vendors & Products Wago
Wago 750-8202
Wago 750-8202 Firmware
Wago 750-8203
Wago 750-8203 Firmware
Wago 750-8204
Wago 750-8204 Firmware
Wago 750-8206
Wago 750-8206 Firmware
Wago 750-8207
Wago 750-8207 Firmware
Wago 750-8208
Wago 750-8208 Firmware
Wago 750-8210
Wago 750-8210 Firmware
Wago 750-8211
Wago 750-8211 Firmware
Wago 750-8212
Wago 750-8212 Firmware
Wago 750-8213
Wago 750-8213 Firmware
Wago 750-8214
Wago 750-8214 Firmware
Wago 750-8216
Wago 750-8216 Firmware
Wago 750-8217
Wago 750-8217 Firmware
Wago 750-823
Wago 750-823 Firmware
Wago 750-829
Wago 750-829 Firmware
Wago 750-831
Wago 750-831 Firmware
Wago 750-832
Wago 750-832 Firmware
Wago 750-852
Wago 750-852 Firmware
Wago 750-862
Wago 750-862 Firmware
Wago 750-880
Wago 750-880 Firmware
Wago 750-881
Wago 750-881 Firmware
Wago 750-882
Wago 750-882 Firmware
Wago 750-885
Wago 750-885 Firmware
Wago 750-889
Wago 750-889 Firmware
Wago 750-890
Wago 750-890 Firmware
Wago 750-891
Wago 750-891 Firmware
Wago 750-893
Wago 750-893 Firmware
Weaknesses

Sources

Status
PUBLISHED
Assigner
CERTVDE
Published
Updated
Sep 16, 2024, 10:25 PM
Reserved
Jun 10, 2021, 12:00 AM
Status
Analyzed
Published
Oct 26, 2021, 10:15 AM
Modified
Jun 17, 2026, 3:56 AM