High severity7.8NVD Advisory· Published Jul 13, 2021· Updated Jun 17, 2026
CVE-2021-31893
CVE-2021-31893
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.
Affected products
19cpe:2.3:o:siemens:simatic_pcs_firmware:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:siemens:simatic_pcs_firmware:*:*:*:*:*:*:*:*range: <=8.2
- cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:-:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:sp1:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_pcs_firmware:9.0:sp2:*:*:*:*:*:*
- cpe:2.3:o:siemens:simatic_pdm_firmware:*:*:*:*:*:*:*:*Range: <9.2
- cpe:2.3:o:siemens:simatic_step_7_firmware:*:*:*:*:*:*:*:*Range: <=5.6
cpe:2.3:o:siemens:sinamics_starter_firmware:*:*:*:*:*:*:*:*+ 3 more
- cpe:2.3:o:siemens:sinamics_starter_firmware:*:*:*:*:*:*:*:*range: <5.4
- cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:-:*:*:*:*:*:*
- cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hotfix_1:*:*:*:*:*:*
- cpe:2.3:o:siemens:sinamics_starter_firmware:5.4:hotfix_2:*:*:*:*:*:*
- Range: <V9.2
<=V8.2, <V9.0 SP3+ 2 more
- (no CPE)range: <=V8.2, <V9.0 SP3
- (no CPE)range: All versions < V9.0 SP3
- (no CPE)range: All versions < V9.2
- Range: <V5.6 SP2 HF3
- Range: <V5.4 HF2
- Siemens/SIMATIC PCS 7 V8.2 and earlierv5Range: All versions
- Range: All versions < V5.6 SP2 HF3
- Siemens/SINAMICS STARTER (containing STEP 7 OEM version)v5Range: All versions < V5.4 HF2
Patches
Vulnerability mechanics
References
1- cert-portal.siemens.com/productcert/pdf/ssa-641963.pdfnvdPatchVendor Advisory
News mentions
0No linked articles in our index yet.