CVE-2021-42029

Description

A vulnerability has been identified in SIMATIC STEP 7 (TIA Portal) V15 (All versions), SIMATIC STEP 7 (TIA Portal) V16 (All versions < V16 Update 5), SIMATIC STEP 7 (TIA Portal) V17 (All versions < V17 Update 2). An attacker could achieve privilege escalation on the web server of certain devices due to improper access control vulnerability in the engineering system software. The attacker needs to have direct access to the impacted web server.

References

Link	Tags
https://cert-portal.siemens.com/productcert/pdf/ssa-350757.pdf	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-42029?: CVE-2021-42029 has been scored as a high severity vulnerability.
How to fix CVE-2021-42029?: To fix CVE-2021-42029, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42029 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-42029 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-42029?: CVE-2021-42029 affects Siemens SIMATIC STEP 7 (TIA Portal) V15, Siemens SIMATIC STEP 7 (TIA Portal) V16, Siemens SIMATIC STEP 7 (TIA Portal) V17.

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Description

Category

CWE-284 – Improper Access Control

References

Frequently Asked Questions