High severity7.5NVD Advisory· Published Jul 13, 2021· Updated Jun 17, 2026

CVE-2020-28400

Description

Affected devices contain a vulnerability that allows an unauthenticated attacker to trigger a denial of service condition. The vulnerability can be triggered if a large amount of DCP reset packets are sent to the device.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

290

Siemens Foundation/Industrial Edgellm-create
Siemens/Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controllerv5
Range: 0
Siemens/Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200v5
Range: 0
Siemens/Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200Pv5
Range: 0
Siemens Foundation/RM1224 LTE(4G) EUcpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/SCALANCE M804PBcpe-rescue
Range: 0
Siemens/SCALANCE M812-1 ADSL-Routerv5
Range: 0
Siemens/SCALANCE M816-1 ADSL-Routerv5
Range: 0
Siemens/SCALANCE M826-2 SHDSL-Routerv5
Range: 0
Siemens Foundation/SCALANCE M875cpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE M874-3 3G-Router (CN)v5
Range: 0
Siemens Foundation/SCALANCE M876-4 (EU)cpe-rescue5 versions
0+ 4 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE MUM853-1 (A1)v5
Range: 0
Siemens/SCALANCE MUM853-1 (B1)v5
Range: 0
Siemens/SCALANCE MUM853-1 (EU)v5
Range: 0
Siemens/SCALANCE MUM856-1 (A1)v5
Range: 0
Siemens/SCALANCE MUM856-1 (B1)v5
Range: 0
Siemens/SCALANCE MUM856-1 (CN)v5
Range: 0
Siemens/SCALANCE MUM856-1 (EU)v5
Range: 0
Siemens/SCALANCE MUM856-1 (RoW)v5
Range: 0
Siemens Foundation/SCALANCE S615 LAN-Routercpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance W1748cpe-rescue
Range: 0
Siemens Foundation/Scalance W1788cpe-rescue4 versions
0+ 3 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE W721-1 RJ45v5
Range: 0
Siemens/SCALANCE W722-1 RJ45v5
Range: 0
Siemens/SCALANCE W734-1 RJ45v5
Range: 0
Siemens/SCALANCE W734-1 RJ45 (USA)v5
Range: 0
Siemens Foundation/Scalance W744 1cpe-rescue4 versions
0+ 3 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE W761-1 RJ45v5
Range: 0
Siemens/SCALANCE W774-1 M12 EECv5
Range: 0
Siemens/SCALANCE W774-1 RJ45v5
Range: 0
Siemens/SCALANCE W774-1 RJ45 (USA)v5
Range: 0
Siemens/SCALANCE W778-1 M12 EECv5
Range: 0
Siemens/SCALANCE W778-1 M12 EEC (USA)v5
Range: 0
Siemens Foundation/Scalance W784 1rrcpe-rescue
Range: 0
Siemens Foundation/Scalance W788 2rrcpe-rescue6 versions
0+ 5 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance W788 2procpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance X200 4p Irtcpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance X201 3p Irtcpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance X202 2irtcpe-rescue
Range: 0
Siemens Foundation/Scalance X202 2p Irtcpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance X204irtcpe-rescue9 versions
0+ 8 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/SCALANCE X204-2cpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE X206-1LDv5
Range: 0
Siemens/SCALANCE X212-2LDv5
Range: 0
Siemens Foundation/SCALANCE XCM324cpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE X302-7 EEC (230V)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (230V, coated)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (24V)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (24V, coated)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (2x 230V)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (2x 230V, coated)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (2x 24V)v5
Range: 0
Siemens/SCALANCE X302-7 EEC (2x 24V, coated)v5
Range: 0
Siemens Foundation/Scalance X308 2mcpe-rescue11 versions
0+ 10 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE X306-1LD FEv5
Range: 0
Siemens/SCALANCE X307-2 EEC (230V)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (230V, coated)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (24V)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (24V, coated)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (2x 230V)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (2x 230V, coated)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (2x 24V)v5
Range: 0
Siemens/SCALANCE X307-2 EEC (2x 24V, coated)v5
Range: 0
Siemens Foundation/SCALANCE X300cpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE X320-1-2LD FEv5
Range: 0
Siemens/SCALANCE X320-1 FEv5
Range: 0
Siemens Foundation/Scalance Xb205 3ld Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xb205 3 Firmwarecpe-rescue
Range: 0
Siemens/SCALANCE XB205-3 (ST, E/IP)v5
Range: 0
Siemens/SCALANCE XB205-3 (ST, PN)v5
Range: 0
Siemens/SCALANCE XB208 (E/IP)v5
Range: 0
Siemens Foundation/Scalance Xp208 Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xb213 3ld Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE XB213-3 (SC, E/IP)v5
Range: 0
Siemens Foundation/Scalance Xb213 3 Firmwarecpe-rescue
Range: 0
Siemens/SCALANCE XB213-3 (ST, E/IP)v5
Range: 0
Siemens/SCALANCE XB213-3 (ST, PN)v5
Range: 0
Siemens/SCALANCE XB216 (E/IP)v5
Range: 0
Siemens Foundation/Scalance Xp216eec Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xc208g Poe Firmwarecpe-rescue6 versions
0+ 5 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xr328 4c Wg Firmwarecpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xc206 2sfp G \(e\/ip\) Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xc206 2sfp G Eec Firmwarecpe-rescue
Range: 0
Siemens/SCALANCE XC206-2 (ST/BFOC)v5
Range: 0
Siemens Foundation/Scalance Xc208g Eec Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xc208g Firmwarecpe-rescue
Range: 0
Siemens/SCALANCE XC208G (EIP def.)v5
Range: 0
Siemens/SCALANCE XC208G PoE (54 V DC)v5
Range: 0
Siemens Foundation/Scalance Xc216 4c G \(e\/ip\) Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE XC216-3G PoEv5
Range: 0
Siemens/SCALANCE XC216-3G PoE (54 V DC)v5
Range: 0
Siemens Foundation/Scalance Xc216 4c Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance S615 Firmwarecpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xc224 4c G Eec Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance Xc224 4c G \(e\/ip\) Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance Xf204irtcpe-rescue7 versions
0+ 6 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xf204 2ba Dna Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance Xf204 2ba Irt Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance Xm408 8c Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xm400 Firmwarecpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xr526 8c Firmwarecpe-rescue10 versions
0+ 9 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xp208poe Eec Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE XP208 (Ethernet/IP)v5
Range: 0
Siemens Foundation/Scalance Xp216poe Eec Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE XP216 (Ethernet/IP)v5
Range: 0
Siemens/SCALANCE XR324-12M (230V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-12M (230V, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-12M (24V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-12M (24V, ports on rear)v5
Range: 0
Siemens Foundation/Scalance Xr324wg Firmwarecpe-rescue
Range: 0
Siemens/SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (24V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (24V, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (2x 24V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M EEC (2x 24V, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M PoE (230V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M PoE (230V, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M PoE (24V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324-4M PoE (24V, ports on rear)v5
Range: 0
Siemens/SCALANCE XR324-4M PoE TS (24V, ports on front)v5
Range: 0
Siemens/SCALANCE XR324WG (24 x FE, AC 230V)v5
Range: 0
Siemens/SCALANCE XR324WG (24 X FE, DC 24V)v5
Range: 0
Siemens/SCALANCE XR328-4C WG (24XFE, 4XGE, 24V)v5
Range: 0
Siemens/SCALANCE XR328-4C WG (24xFE,4xGE,AC230V)v5
Range: 0
Siemens/SCALANCE XR328-4C WG (24xFE, 4xGE,DC24V)v5
Range: 0
Siemens/SCALANCE XR328-4C WG (28xGE, AC 230V)v5
Range: 0
Siemens/SCALANCE XR328-4C WG (28xGE, DC 24V)v5
Range: 0
Siemens Foundation/Scalance Xr526 8c L3 Firmwarecpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Scalance Xr500 Firmwarecpe-rescue6 versions
0+ 5 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SCALANCE XR526-8C, 1x230V (L3 int.)v5
Range: 0
Siemens/SCALANCE XR526-8C, 2x230V (L3 int.)v5
Range: 0
Siemens Foundation/Scalance Xr 300 Firmwarecpe-rescue
Range: 0
Siemens Foundation/Scalance Xr528 6m L3 Firmwarecpe-rescue
Range: 0
Siemens Foundation/Simatic Cfccpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Simatic Cm 1542 1 Firmwarecpe-rescue
Range: 0
Siemens Foundation/Cp 1604 Firmwarecpe-rescue
Range: All Versions >= V2.7
Siemens Foundation/Cp 1616 Firmwarecpe-rescue
Range: All Versions >= V2.7
Siemens Foundation/Simatic Cp 1626 Firmwarecpe-rescue
Range: 0
Siemens/SIMATIC IE/PB-LINKv5
Range: V3
Siemens Foundation/SIMATIC MV540 Hcpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/SIMATIC MV550 Hcpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/SIMATIC MV560 Ucpe-rescue2 versions
0+ 1 more
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Simatic Dk 16xx Pn Io Firmwarecpe-rescue
Range: All Versions >= V2.7
Siemens/SIMATIC Power Line Booster PLB, Base Modulev5
Range: 0
Siemens/SIMATIC PROFINET Driverv5
Range: 0
Siemens Foundation/Simatic S7 CPU 1200 Firmwarecpe-rescue7 versions
0+ 6 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Simatic S7 CPU 1215ccpe-rescue9 versions
0+ 8 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/Simatic S7 1200 CPU 1214c Firmwarecpe-rescue3 versions
0+ 2 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens Foundation/SIMATIC CP 1242-7 V2 (incl. SIPLUS variants)cpe-rescue
Range: 0
Siemens/SIMOCODE pro V EIP 110-240V AC/DCv5
Range: 0
Siemens/SIMOCODE pro V EIP 24V DCv5
Range: 0
Siemens/SIMOCODE pro V PN 110-240V AC/DCv5
Range: 0
Siemens/SIMOCODE pro V PN 24V DCv5
Range: 0
Siemens/SIPLUS NET SCALANCE X308-2v5
Range: 0
Siemens/SIPLUS NET SCALANCE XC206-2v5
Range: 0
Siemens/SIPLUS NET SCALANCE XC206-2SFPv5
Range: 0
Siemens/SIPLUS NET SCALANCE XC208v5
Range: 0
Siemens/SIPLUS NET SCALANCE XC216-4Cv5
Range: 0
Siemens Foundation/SIPLUS S7-1200 CPUcpe-rescue19 versions
0+ 18 more
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
- (no CPE)range: 0
Siemens/SIPLUS SIMOCODE pro V basic unit 2v5
Range: 0
Siemens/SOFTNET-IE PNIOv5
Range: 0

Patches

Vulnerability mechanics

References

cert-portal.siemens.com/productcert/pdf/ssa-599968.pdfnvdPatchVendor Advisory
us-cert.cisa.gov/ics/advisories/icsa-21-194-03nvdThird Party AdvisoryUS Government Resource
cert-portal.siemens.com/productcert/html/ssa-599968.htmlnvd

News mentions

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cvss	0.488
epss	0.001
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000