CVE-2021-30191

HIGH

CODESYS V2 Web-Server <1.1.9.20 - Buffer Overflow

Title source: llm
STIX 2.1

Description

CODESYS V2 Web-Server before 1.1.9.20 has a a Buffer Copy without Checking the Size of the Input.

References (2)

Core 2
Core References
Permissions Required, Vendor Advisory x_refsource_misc
https://customers.codesys.com/index.php

Scores

CVSS v3 7.5
EPSS 0.0041
EPSS Percentile 61.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-120
Status published
Products (28)
codesys/v2_web_server < 1.1.9.20
wago/750-8202_firmware < 03.06.19_\(18\)
wago/750-8203_firmware < 03.06.19_\(18\)
wago/750-8204_firmware < 03.06.19_\(18\)
wago/750-8206_firmware < 03.06.19_\(18\)
wago/750-8207_firmware < 03.06.19_\(18\)
wago/750-8208_firmware < 03.06.19_\(18\)
wago/750-8210_firmware < 03.06.19_\(18\)
wago/750-8211_firmware < 03.06.19_\(18\)
wago/750-8212_firmware < 03.06.19_\(18\)
... and 18 more
Published May 25, 2021
Tracked Since Feb 18, 2026