CVEvulnerability

CVE-2021-34585

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-252

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.

Affected configurations

• wago 750-823 firmware (< fw10) • wago 750-829 firmware (< fw17) • wago 750-831 firmware (< fw17) • wago 750-832 firmware (< fw10) • wago 750-852 firmware (< fw17) • wago 750-862 firmware (< fw10) • wago 750-880 firmware (< fw17) • wago 750-881 firmware (< fw17) • wago 750-882 firmware (< fw17) • wago 750-885 firmware (< fw17) • wago 750-889 firmware (< fw17) • wago 750-890 firmware (< fw10) • wago 750-891 firmware (< fw10) • wago 750-893 firmware (< fw10) • 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 codesys (< 1.1.9.22)

Related

Weakness · CWE (1)

  • CWE-252 Unchecked Return Value weakness

References