CVE-2020-15782

CRITICAL
9.8
CVSS Score
Published: May 28, 2021 at 04:10 PM UTC
Updated: June 17, 2026 at 02:57 AM UTC
71 products affected across 1 vendorSIMATIC S7 PLCSIM AdvancedS7-1500 CPU FirmwareS7-1200 CPU Firmware

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Severity
CRITICAL9.8
Exploit prediction
EPSS 5%
SSVC
No known exploit

Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINAMICS PERFECT HARMONY GH180 Drives (Drives manufactured before 2021-08-13), SINUMERIK MC (All versions < V6.15), SINUMERIK ONE (All versions < V6.15). Affected devices are vulnerable to a memory protection bypass through a specific operation. A remote unauthenticated attacker with network access to port 102/tcp could potentially write arbitrary data and code to protected memory areas or read sensitive data to launch further attacks.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

All versions
siemens-cpu-1515sp-pc (environment) · siemens-cpu-1515sp-pc2 (environment)
v < 4.5.0
Affected range stops below 4.5.0, so it looks safe — our inference, not a vendor statement
siemens-cpu-1211c (environment) · siemens-cpu-1212c (environment) · siemens-cpu-1212fc (environment) · siemens-cpu-1214c (environment) · siemens-cpu-1214fc (environment) · siemens-cpu-1215c (environment) · siemens-cpu-1215fc (environment) · siemens-cpu-1217c (environment)
v < 2.9.2
Affected range stops below 2.9.2, so it looks safe — our inference, not a vendor statement
siemens-6es7510-1dj01-0ab0 (environment) · siemens-6es7510-1sj01-0ab0 (environment) · siemens-6es7511-1ak01-0ab0 (environment) · siemens-6es7511-1ak02-0ab0 (environment) · siemens-6es7511-1ck00-0ab0 (environment) · siemens-6es7511-1ck01-0ab0 (environment) · siemens-6es7511-1fk01-0ab0 (environment) · siemens-6es7511-1fk02-0ab0 (environment) · siemens-6es7511-1tk01-0ab0 (environment) · siemens-6es7511-1uk01-0ab0 (environment) · siemens-6es7512-1ck00-0ab0 (environment) · siemens-6es7512-1ck01-0ab0 (environment) · siemens-6es7512-1dk01-0ab0 (environment) · siemens-6es7512-1sk01-0ab0 (environment) · siemens-6es7513-1al01-0ab0 (environment) · siemens-6es7513-1al02-0ab0 (environment) · siemens-6es7513-1fl01-0ab0 (environment) · siemens-6es7513-1fl02-0ab0 (environment) · siemens-6es7513-1rl00-0ab0 (environment) · siemens-6es7513-2gl00-0ab0 (environment) · siemens-6es7513-2pl00-0ab0 (environment) · siemens-6es7515-2am01-0ab0 (environment) · siemens-6es7515-2am02-0ab0 (environment) · siemens-6es7515-2fm01-0ab0 (environment) · siemens-6es7515-2fm02-0ab0 (environment) · siemens-6es7515-2rm00-0ab0 (environment) · siemens-6es7515-2tm01-0ab0 (environment) · siemens-6es7515-2um01-0ab0 (environment) · siemens-6es7516-2gn00-0ab0 (environment) · siemens-6es7516-2pn00-0ab0 (environment) · siemens-6es7516-3an01-0ab0 (environment) · siemens-6es7516-3an02-0ab0 (environment) · siemens-6es7516-3fn01-0ab0 (environment) · siemens-6es7516-3fn02-0ab0 (environment) · siemens-6es7516-3tn00-0ab0 (environment) · siemens-6es7516-3un00-0ab0 (environment) · siemens-6es7517-3ap00-0ab0 (environment) · siemens-6es7517-3fp00-0ab0 (environment) · siemens-6es7517-3hp00-0ab0 (environment) · siemens-6es7517-3tp00-0ab0 (environment) · siemens-6es7517-3up00-0ab0 (environment) · siemens-6es7518-4ap00-0ab0 (environment) · siemens-6es7518-4ap00-3ab0 (environment) · siemens-6es7518-4fp00-0ab0 (environment) · siemens-6es7518-4fp00-3ab0 (environment)
v < 2.9.2
Affected range stops below 2.9.2, so it looks safe — our inference, not a vendor statement
siemens-cpu-1504d-tf (environment) · siemens-cpu-1507d-tf (environment)
Affected range stops below 4.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

9.8CRITICALCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-119

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