CVE-2021-31893: Buffer Overflow
A vulnerability has been identified in SIMATIC PCS 7 V8.2 and earlier (All versions), SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2). The affected software contains a buffer overflow vulnerability while handling certain files that could allow a local attacker to trigger a denial-of-service condition or potentially lead to remote code execution.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2021-31893?
The severity of CVE-2021-31893 is 7.8 (high).
Which software versions are affected by CVE-2021-31893?
SIMATIC PCS 7 V8.2 and earlier, SIMATIC PCS 7 V9.0 (All versions < V9.0 SP3), SIMATIC PDM (All versions < V9.2), SIMATIC STEP 7 V5.X (All versions < V5.6 SP2 HF3), SINAMICS STARTER (containing STEP 7 OEM version) (All versions < V5.4 HF2).
What is the CVE ID for this vulnerability?
The CVE ID for this vulnerability is CVE-2021-31893.
How do I fix CVE-2021-31893?
Apply the relevant security patches or updates provided by Siemens.
Where can I find more information about CVE-2021-31893?
More information about CVE-2021-31893 can be found at the following reference: https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdf