CVEvulnerability

CVE-2021-34593

7.5 HIGH Published 2021-10-26 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2021-10-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-755

Description

In CODESYS V2 Runtime Toolkit 32 Bit full and PLCWinNT prior to versions V2.4.7.56 unauthenticated crafted invalid requests may result in several denial-of-service conditions. Running PLC programs may be stopped, memory may be leaked, or further communication clients may be blocked from accessing the PLC.

Affected configurations

• wago 750-8202 firmware (< fw20) • wago 750-8203 firmware (< fw20) • wago 750-8204 firmware (< fw20) • wago 750-8206 firmware (< fw20) • wago 750-8207 firmware (< fw20) • wago 750-8208 firmware (< fw20) • wago 750-8210 firmware (< fw20) • wago 750-8211 firmware (< fw20) • wago 750-8212 firmware (< fw20) • wago 750-8213 firmware (< fw20) • wago 750-8214 firmware (< fw20) • wago 750-8216 firmware (< fw20) • wago 750-8217 firmware (< fw20) • codesys plcwinnt (< 2.4.7.56) • codesys runtime toolkit (< 2.4.7.56)

Related

Weakness · CWE (1)

  • CWE-755 Improper Handling of Exceptional Conditions weakness

References