CVE-2021-42029
HIGH
7.8
CVSS Score
Published: April 12, 2022 at 09:07 AM UTC
Updated: June 17, 2026 at 04:09 AM UTC
71 products affected across 1 vendorSIMATIC Step 7SIMATIC S7-1500-cpu 1512SP 1SIMATIC S7-1500-cpu 1510SP 1
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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
15 ≤ v < 161616 update116 update216 update316 update41717 update1All versions < V16 Update 5All versions < V17 Update 2
Affected range stops below 16, so it looks safe — our inference, not a vendor statement
siemens-simatic-s7-1200-cpu (environment) · siemens-simatic-s7-1200-cpu-1211c (environment) · siemens-simatic-s7-1200-cpu-1212c (environment) · siemens-simatic-s7-1200-cpu-1212fc (environment) · siemens-simatic-s7-1200-cpu-1214-fc (environment) · siemens-simatic-s7-1200-cpu-1214c (environment) · siemens-simatic-s7-1200-cpu-1214fc (environment) · siemens-simatic-s7-1200-cpu-1215-fc (environment) · siemens-simatic-s7-1200-cpu-1215c (environment) · siemens-simatic-s7-1200-cpu-1215fc (environment) · siemens-simatic-s7-1200-cpu-1217c (environment) · siemens-simatic-s7-1500-cpu (environment) · siemens-simatic-s7-1500-cpu-1507s (environment) · siemens-simatic-s7-1500-cpu-1507s-f (environment) · siemens-simatic-s7-1500-cpu-1508s (environment) · siemens-simatic-s7-1500-cpu-1508s-f (environment) · siemens-simatic-s7-1500-cpu-1510sp (environment) · siemens-simatic-s7-1500-cpu-1510sp-1 (environment) · siemens-simatic-s7-1500-cpu-1511-1 (environment) · siemens-simatic-s7-1500-cpu-1511-1-pn (environment) · siemens-simatic-s7-1500-cpu-1511c (environment) · siemens-simatic-s7-1500-cpu-1511c-1 (environment) · siemens-simatic-s7-1500-cpu-1511f-1 (environment) · siemens-simatic-s7-1500-cpu-1511f-1-pn (environment) · siemens-simatic-s7-1500-cpu-1511t-1 (environment) · siemens-simatic-s7-1500-cpu-1511tf-1 (environment) · siemens-simatic-s7-1500-cpu-1512c (environment) · siemens-simatic-s7-1500-cpu-1512c-1 (environment) · siemens-simatic-s7-1500-cpu-1512sp-1 (environment) · siemens-simatic-s7-1500-cpu-1512spf-1 (environment) · siemens-simatic-s7-1500-cpu-1513-1 (environment) · siemens-simatic-s7-1500-cpu-1513-1-pn (environment) · siemens-simatic-s7-1500-cpu-1513f-1 (environment) · siemens-simatic-s7-1500-cpu-1513f-1-pn (environment) · siemens-simatic-s7-1500-cpu-1513r-1 (environment) · siemens-simatic-s7-1500-cpu-1515-2 (environment) · siemens-simatic-s7-1500-cpu-1515-2-pn (environment) · siemens-simatic-s7-1500-cpu-1515f-2 (environment) · siemens-simatic-s7-1500-cpu-1515f-2-pn (environment) · siemens-simatic-s7-1500-cpu-1515r-2 (environment) · siemens-simatic-s7-1500-cpu-1515t-2 (environment) · siemens-simatic-s7-1500-cpu-1515tf-2 (environment) · siemens-simatic-s7-1500-cpu-1516-3 (environment) · siemens-simatic-s7-1500-cpu-1516-3-dp (environment) · siemens-simatic-s7-1500-cpu-1516-3-pn (environment) · siemens-simatic-s7-1500-cpu-1516-3-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1516f-3 (environment) · siemens-simatic-s7-1500-cpu-1516f-3-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1516pro-2 (environment) · siemens-simatic-s7-1500-cpu-1516pro-f (environment) · siemens-simatic-s7-1500-cpu-1516t-3 (environment) · siemens-simatic-s7-1500-cpu-1516tf-3 (environment) · siemens-simatic-s7-1500-cpu-1517-3 (environment) · siemens-simatic-s7-1500-cpu-1517-3-dp (environment) · siemens-simatic-s7-1500-cpu-1517-3-pn (environment) · siemens-simatic-s7-1500-cpu-1517-3-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1517f-3 (environment) · siemens-simatic-s7-1500-cpu-1517f-3-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1517tf-3 (environment) · siemens-simatic-s7-1500-cpu-1518 (environment) · siemens-simatic-s7-1500-cpu-1518-4 (environment) · siemens-simatic-s7-1500-cpu-1518-4-dp (environment) · siemens-simatic-s7-1500-cpu-1518-4-pn (environment) · siemens-simatic-s7-1500-cpu-1518-4-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1518-4-pn-dp-mfp (environment) · siemens-simatic-s7-1500-cpu-1518f-4 (environment) · siemens-simatic-s7-1500-cpu-1518f-4-pn-dp (environment) · siemens-simatic-s7-1500-cpu-1518hf-4 (environment) · siemens-simatic-s7-1500-cpu-1518t-4 (environment) · siemens-simatic-s7-1500-cpu-1518tf-4 (environment)
80%
All versions
80%
All versions
80%
All versions
80%
All versions
80%
All versions
80%
All versions
80%
All versions
80%
All versions
80%
All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (1)
x_refsource_MISCPatchVendor Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-350757.pdfCVSS
- Attack Vector
- LOCAL
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-284NVD-CWE-Other
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