Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Siemens | Simatic Pcs Firmware | <= 8.2 |
| Siemens | Simatic Pcs | - |
| Siemens | Simatic Pdm Firmware | < 9.2 |
| Siemens | Simatic Pdm | - |
| Siemens | Simatic Step 7 Firmware | <= 5.6 |
| Siemens | Simatic Step 7 | - |
| Siemens | Sinamics Starter Firmware | < 5.4 |
| Siemens | Sinamics Starter | - |
Related Weaknesses (CWE)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdfPatchVendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-641963.pdfPatchVendor Advisory
FAQ
What is CVE-2021-31893?
CVE-2021-31893 is a vulnerability with a CVSS score of 7.8 (HIGH). 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...
How severe is CVE-2021-31893?
CVE-2021-31893 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-31893?
Check the references section above for vendor advisories and patch information. Affected products include: Siemens Simatic Pcs Firmware, Siemens Simatic Pcs, Siemens Simatic Pdm Firmware, Siemens Simatic Pdm, Siemens Simatic Step 7 Firmware.