Buffer overflow in Siemens products - CVE-2021-40368
Published: April 20, 2022
Vulnerability identifier: #VU62460
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-40368
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary error. A remote attacker can trigger memory corruption and cause a denial of service condition on the target system.
Affected software
SIMATIC S7-400 PN/DP V7
SIMATIC S7-410 V8
SIMATIC S7-400 H V6
SIMATIC S7-410 V10
SIMATIC S7-410 V8
SIMATIC S7-400 H V6
SIMATIC S7-410 V10
How to mitigate CVE-2021-40368
Install updates from vendor's website.
SIMATIC S7-400 H V6 - update to 6.0.10
SIMATIC S7-410 V10 - update to 10.1
SIMATIC S7-410 V10 - update to 10.1