CVE-2020-28397
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2),...
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
- Record
CVE-2020-28397- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:P/I:N/A:N - Weakness
- CWE-863
- Updated
- 2026-11-02
CVE List No score
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
- Record
CVE-2020-28397- Weakness
- CWE-863
- Updated
- 2026-11-02
EUVDEUVD-2020-20856 No score
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5 < V21.9), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
- Record
EUVD-2020-20856- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wg3f-fv3w-mw54 No score
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2),...
A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions), SIMATIC S7 PLCSIM Advanced (All versions > V2 < V4), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (Version V4.4), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions > V2.5 < V2.9.2), SIMATIC S7-1500 Software Controller (All versions > V2.5), TIM 1531 IRC (incl. SIPLUS NET variants) (Version V2.1). Due to an incorrect authorization check in the affected component, an attacker could extract information about access protected PLC program variables over port 102/tcp from an affected device when reading multiple attributes at once.
- Record
GHSA-wg3f-fv3w-mw54- Weakness
- CWE-863
- Updated
- 2026-11-02
Affected products
- siemens simatic drive controller family
- siemens simatic et 200sp open controller cpu 1515sp pc2 (incl. siplus variants)
- siemens simatic s7 plcsim advanced
- siemens simatic s7-1200 cpu family (incl. siplus variants)
- siemens simatic s7-1500 cpu family (incl. related et200 cpus and siplus variants)
- siemens simatic s7-1500 software controller
- siemens tim 1531 irc (incl. siplus net variants)
- siemens cpu1510sp f-1 firmware
- siemens cpu 1211c firmware
- siemens cpu 1212c firmware
- siemens cpu 1212fc firmware
- siemens cpu 1214c firmware
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- siemens cpu 1214fc firmware
- siemens cpu 1215c firmware
- siemens cpu 1215fc firmware
- siemens cpu 1217c firmware
- siemens cpu 1504d tf firmware
- siemens cpu 1507d tf firmware
- siemens cpu 1510sp-1pn firmware
- siemens cpu 1511-1pn firmware
- siemens cpu 1511c-1 pn firmware
- siemens cpu 1511f-1pn firmware
- siemens cpu 1511t-1pn firmware
- siemens cpu 1511tf-1pn firmware
- siemens cpu 1512c-1 pn firmware
- siemens cpu 1512sp-1 pn firmware
- siemens cpu 1512sp f-1 pn firmware
- siemens cpu 1513-1 pn firmware
- siemens cpu 1513f-1 pn firmware
- siemens cpu 1513pro f-2 pn firmware
- siemens cpu 1513r-1 pn firmware
- siemens cpu 1515-2 firmware
- siemens cpu 1515f-2 firmware
- siemens cpu 1515r-2 pn firmware
- siemens cpu 1515sp pc2 tf firmware
- siemens cpu 1515t-2 pn firmware
- siemens cpu 1515tf-2 pn firmware
- siemens cpu 1516-3 firmware
- siemens cpu 1516f-3 firmware
- siemens cpu 1516pro-2 pn firmware
- siemens cpu 1516pro f-2 pn firmware
- siemens cpu 1516t-3 pn\/dp firmware
- siemens cpu 1516tf-3 pn\/dp firmware
- siemens cpu 1517-3 pn\/dp firmware
- siemens cpu 1517f-3 pn\/dp firmware
- siemens cpu 1517t-3 pn\/dp firmware
- siemens cpu 1517tf-3 pn\/dp firmware
- siemens cpu 1518-4 pn\/dp firmware
- siemens cpu 1518f-4 pn\/dp firmware
- siemens simatic s7 plcsim advanced firmware
- siemens siplus cpu-1516f-3 pn\/dp firmware
- siemens siplus cpu 1510sp f-1pn firmware
- siemens siplus cpu 1511-1 pn firmware
- siemens siplus cpu 1511f-1 pn firmware
- siemens siplus cpu 1512sp-1 pn firmware
- siemens siplus cpu 1512sp f-1pn firmware
- siemens siplus cpu 1513-1 pn firmware
- siemens siplus cpu 1513f-1 pn firmware
- siemens siplus cpu 1516-3 pn\/dp firmware
- siemens siplus cpu 1518-4 pn\/dp firmware
- siemens siplus cpu 1518f-4 pn\/dp firmware
- siemens tim 1531 irc firmware
History
| Recorded | Changed | Sources |
|---|---|---|
| facts | ||
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2020-28397 is a medium vulnerability (CVSS 5.3) in Siemens Simatic Drive Controller Family, published August 10, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.75%, the 55th percentile. No source names a fixed version.