CVE-2025-40943 - Vulnerability Analysis
CriticalCVSS: 9.6Last Updated: March 11, 2026
Affected devices - Command Injection
Overview
Affected devices contain a code injection vulnerability caused by improper sanitization of trace file contents, letting attackers inject code via social engineering a legitimate user to import a crafted trace file.
Severity & Score
Impact
Attackers can execute arbitrary code by tricking users into importing malicious trace files, potentially compromising the system.
Mitigation
Update to the latest version that properly sanitizes trace file contents.
Social Media Activity(1 post)
Siemens Patches Critical Code Injection Flaw in SIMATIC S7-1500 Controllers Siemens reports a critical code injection vulnerability (CVE-2025-40943) in SIMATIC S7-1500 controllers that allows attackers to take full control of devices via malicious trace files. The flaw affects numerous industrial CPUs and requires users to update to version 4.1.2 or restrict web server access. **If you are using Siemens SIMATIC S7-1500 controllers, make sure they are isolated from the internet, especially the web management interface. If the interface is not actively used, just disable it. Then plan a patch of the controllers. It's going to be a long process, many different models are affected.** #cybersecurity #infosec #advisory #vulnerability https://beyondmachines.net/event_details/siemens-patches-critical-code-injection-flaw-in-simatic-s7-1500-controllers-n-r-v-k-0/gD2P6Ple2L
View original postRelated Resources
Details
- CVE ID
- CVE-2025-40943
- Severity
- Critical
- CVSS Score
- 9.6
- Type
- command_injection
- Status
- unconfirmed
- EPSS
- 4.1%
- Social Posts
- 1
CWE
- CWE-79
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H