🔐 CVE Alert

CVE-2025-40833

HIGH 7.5
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
12th

The affected devices contain a null pointer dereference vulnerability while processing specially crafted IPv4 requests. This could allow an attacker to cause denial of service condition. A manual restart is required to recover the system.

CWE CWE-476
Vendor siemens
Product ie/pb link ha
Ecosystems
Industries
IndustrialManufacturing
Published May 12, 2026
Last Updated May 12, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability

Affected Versions

Siemens / IE/PB LINK HA
0 < *
Siemens / IE/PB link PN IO
0 < *
Siemens / RUGGEDCOM RM1224 LTE(4G) EU
0 < V8.3
Siemens / RUGGEDCOM RM1224 LTE(4G) NAM
0 < V8.3
Siemens / SCALANCE M804PB
0 < V8.3
Siemens / SCALANCE M812-1 ADSL-Router
0 < V8.3
Siemens / SCALANCE M812-1 ADSL-Router
0 < V8.3
Siemens / SCALANCE M816-1 ADSL-Router
0 < V8.3
Siemens / SCALANCE M816-1 ADSL-Router
0 < V8.3
Siemens / SCALANCE M826-2 SHDSL-Router
0 < V8.3
Siemens / SCALANCE M874-2
0 < V8.3
Siemens / SCALANCE M874-3
0 < V8.3
Siemens / SCALANCE M874-3 3G-Router (CN)
0 < V8.3
Siemens / SCALANCE M876-3
0 < V8.3
Siemens / SCALANCE M876-3 (ROK)
0 < V8.3
Siemens / SCALANCE M876-4
0 < V8.3
Siemens / SCALANCE M876-4 (EU)
0 < V8.3
Siemens / SCALANCE M876-4 (NAM)
0 < V8.3
Siemens / SCALANCE MUB852-1 (A1)
0 < V8.3
Siemens / SCALANCE MUB852-1 (B1)
0 < V8.3
Siemens / SCALANCE MUM853-1 (A1)
0 < V8.3
Siemens / SCALANCE MUM853-1 (B1)
0 < V8.3
Siemens / SCALANCE MUM853-1 (EU)
0 < V8.3
Siemens / SCALANCE MUM856-1 (A1)
0 < V8.3
Siemens / SCALANCE MUM856-1 (B1)
0 < V8.3
Siemens / SCALANCE MUM856-1 (CN)
0 < V8.3
Siemens / SCALANCE MUM856-1 (EU)
0 < V8.3
Siemens / SCALANCE MUM856-1 (RoW)
0 < V8.3
Siemens / SCALANCE S615 EEC LAN-Router
0 < V8.3
Siemens / SCALANCE S615 LAN-Router
0 < V8.3
Siemens / SCALANCE SC622-2C
0 < *
Siemens / SCALANCE SC626-2C
0 < *
Siemens / SCALANCE SC632-2C
0 < *
Siemens / SCALANCE SC636-2C
0 < *
Siemens / SCALANCE SC642-2C
0 < *
Siemens / SCALANCE SC646-2C
0 < *
Siemens / SCALANCE W1748-1 M12
0 < *
Siemens / SCALANCE W1748-1 M12
0 < *
Siemens / SCALANCE W1788-1 M12
0 < *
Siemens / SCALANCE W1788-2 EEC M12
0 < *
Siemens / SCALANCE W1788-2 M12
0 < *
Siemens / SCALANCE W1788-2IA M12
0 < *
Siemens / SCALANCE W721-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W721-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W722-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W722-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W722-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W734-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W734-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W734-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W734-1 RJ45 (USA)
0 < V6.6.0
Siemens / SCALANCE W738-1 M12
0 < V6.6.0
Siemens / SCALANCE W738-1 M12
0 < V6.6.0
Siemens / SCALANCE W748-1 M12
0 < V6.6.0
Siemens / SCALANCE W748-1 M12
0 < V6.6.0
Siemens / SCALANCE W748-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W748-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W761-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W761-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W774-1 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W774-1 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W774-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W774-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W774-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W774-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W774-1 RJ45 (USA)
0 < V6.6.0
Siemens / SCALANCE W778-1 M12
0 < V6.6.0
Siemens / SCALANCE W778-1 M12
0 < V6.6.0
Siemens / SCALANCE W778-1 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W778-1 M12 EEC (USA)
0 < V6.6.0
Siemens / SCALANCE W786-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W786-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W786-2 RJ45
0 < V6.6.0
Siemens / SCALANCE W786-2 RJ45
0 < V6.6.0
Siemens / SCALANCE W786-2 RJ45
0 < V6.6.0
Siemens / SCALANCE W786-2 SFP
0 < V6.6.0
Siemens / SCALANCE W786-2 SFP
0 < V6.6.0
Siemens / SCALANCE W786-2IA RJ45
0 < V6.6.0
Siemens / SCALANCE W786-2IA RJ45
0 < V6.6.0
Siemens / SCALANCE W788-1 M12
0 < V6.6.0
Siemens / SCALANCE W788-1 M12
0 < V6.6.0
Siemens / SCALANCE W788-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W788-1 RJ45
0 < V6.6.0
Siemens / SCALANCE W788-2 M12
0 < V6.6.0
Siemens / SCALANCE W788-2 M12
0 < V6.6.0
Siemens / SCALANCE W788-2 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W788-2 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W788-2 M12 EEC
0 < V6.6.0
Siemens / SCALANCE W788-2 RJ45
0 < V6.6.0
Siemens / SCALANCE W788-2 RJ45
0 < V6.6.0
Siemens / SCALANCE W788-2 RJ45
0 < V6.6.0
Siemens / SCALANCE WAB762-1
0 < V3.2.0
Siemens / SCALANCE WAM763-1
0 < V3.2.0
Siemens / SCALANCE WAM763-1 (ME)
0 < V3.2.0
Siemens / SCALANCE WAM763-1 (US)
0 < V3.2.0
Siemens / SCALANCE WAM766-1
0 < V3.2.0
Siemens / SCALANCE WAM766-1 (ME)
0 < V3.2.0
Siemens / SCALANCE WAM766-1 (US)
0 < V3.2.0
Siemens / SCALANCE WAM766-1 EEC
0 < V3.2.0
Siemens / SCALANCE WAM766-1 EEC (ME)
0 < V3.2.0
Siemens / SCALANCE WAM766-1 EEC (US)
0 < V3.2.0
Siemens / SCALANCE WUB762-1
0 < V3.2.0
Siemens / SCALANCE WUB762-1 iFeatures
0 < V3.2.0
Siemens / SCALANCE WUM763-1
0 < V3.2.0
Siemens / SCALANCE WUM763-1
0 < V3.2.0
Siemens / SCALANCE WUM763-1 (US)
0 < V3.2.0
Siemens / SCALANCE WUM763-1 (US)
0 < V3.2.0
Siemens / SCALANCE WUM766-1
0 < V3.2.0
Siemens / SCALANCE WUM766-1 (ME)
0 < V3.2.0
Siemens / SCALANCE WUM766-1 (USA)
0 < V3.2.0
Siemens / SCALANCE X204-2
0 < *
Siemens / SCALANCE X204-2FM
0 < *
Siemens / SCALANCE X204-2LD
0 < *
Siemens / SCALANCE X204-2LD TS
0 < *
Siemens / SCALANCE X204-2TS
0 < *
Siemens / SCALANCE X206-1
0 < *
Siemens / SCALANCE X206-1LD
0 < *
Siemens / SCALANCE X208
0 < *
Siemens / SCALANCE X208PRO
0 < *
Siemens / SCALANCE X212-2
0 < *
Siemens / SCALANCE X212-2LD
0 < *
Siemens / SCALANCE X216
0 < *
Siemens / SCALANCE X224
0 < *
Siemens / SCALANCE X302-7 EEC (230V, coated)
0 < *
Siemens / SCALANCE X302-7 EEC (230V)
0 < *
Siemens / SCALANCE X302-7 EEC (24V, coated)
0 < *
Siemens / SCALANCE X302-7 EEC (24V)
0 < *
Siemens / SCALANCE X302-7 EEC (2x 230V, coated)
0 < *
Siemens / SCALANCE X302-7 EEC (2x 230V)
0 < *
Siemens / SCALANCE X302-7 EEC (2x 24V, coated)
0 < *
Siemens / SCALANCE X302-7 EEC (2x 24V)
0 < *
Siemens / SCALANCE X304-2FE
0 < *
Siemens / SCALANCE X306-1LD FE
0 < *
Siemens / SCALANCE X307-2 EEC (230V, coated)
0 < *
Siemens / SCALANCE X307-2 EEC (230V)
0 < *
Siemens / SCALANCE X307-2 EEC (24V, coated)
0 < *
Siemens / SCALANCE X307-2 EEC (24V)
0 < *
Siemens / SCALANCE X307-2 EEC (2x 230V, coated)
0 < *
Siemens / SCALANCE X307-2 EEC (2x 230V)
0 < *
Siemens / SCALANCE X307-2 EEC (2x 24V, coated)
0 < *
Siemens / SCALANCE X307-2 EEC (2x 24V)
0 < *
Siemens / SCALANCE X307-3
0 < *
Siemens / SCALANCE X307-3
0 < *
Siemens / SCALANCE X307-3LD
0 < *
Siemens / SCALANCE X307-3LD
0 < *
Siemens / SCALANCE X308-2
0 < *
Siemens / SCALANCE X308-2 RD (inkl. SIPLUS variants)
0 < *
Siemens / SCALANCE X308-2LD
0 < *
Siemens / SCALANCE X308-2LD
0 < *
Siemens / SCALANCE X308-2LH
0 < *
Siemens / SCALANCE X308-2LH
0 < *
Siemens / SCALANCE X308-2LH+
0 < *
Siemens / SCALANCE X308-2LH+
0 < *
Siemens / SCALANCE X308-2M
0 < *
Siemens / SCALANCE X308-2M
0 < *
Siemens / SCALANCE X308-2M PoE
0 < *
Siemens / SCALANCE X308-2M PoE
0 < *
Siemens / SCALANCE X308-2M TS
0 < *
Siemens / SCALANCE X308-2M TS
0 < *
Siemens / SCALANCE X310
0 < *
Siemens / SCALANCE X310
0 < *
Siemens / SCALANCE X310FE
0 < *
Siemens / SCALANCE X310FE
0 < *
Siemens / SCALANCE X320-1 FE
0 < *
Siemens / SCALANCE X320-1-2LD FE
0 < *
Siemens / SCALANCE X408-2
0 < *
Siemens / SCALANCE XF204
0 < *
Siemens / SCALANCE XF204-2
0 < *
Siemens / SCALANCE XF206-1
0 < *
Siemens / SCALANCE XF208
0 < *
Siemens / SCALANCE XM408-4C
0 < *
Siemens / SCALANCE XM408-4C (L3 int.)
0 < *
Siemens / SCALANCE XM408-8C
0 < *
Siemens / SCALANCE XM408-8C (L3 int.)
0 < *
Siemens / SCALANCE XM416-4C
0 < *
Siemens / SCALANCE XM416-4C (L3 int.)
0 < *
Siemens / SCALANCE XR324-12M (230V, ports on front)
0 < *
Siemens / SCALANCE XR324-12M (230V, ports on front)
0 < *
Siemens / SCALANCE XR324-12M (230V, ports on rear)
0 < *
Siemens / SCALANCE XR324-12M (230V, ports on rear)
0 < *
Siemens / SCALANCE XR324-12M (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-12M (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-12M (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-12M (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-12M TS (24V)
0 < *
Siemens / SCALANCE XR324-12M TS (24V)
0 < *
Siemens / SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (100-240VAC/60-250VDC, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 100-240VAC/60-250VDC, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M EEC (2x 24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M PoE (230V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M PoE (230V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M PoE (230V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M PoE (230V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M PoE (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M PoE (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M PoE (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M PoE (24V, ports on rear)
0 < *
Siemens / SCALANCE XR324-4M PoE TS (24V, ports on front)
0 < *
Siemens / SCALANCE XR324-4M PoE TS (24V, ports on front)
0 < *
Siemens / SCALANCE XR524-8C, 1x230V
0 < *
Siemens / SCALANCE XR524-8C, 1x230V (L3 int.)
0 < *
Siemens / SCALANCE XR524-8C, 24V
0 < *
Siemens / SCALANCE XR524-8C, 24V (L3 int.)
0 < *
Siemens / SCALANCE XR524-8C, 2x230V
0 < *
Siemens / SCALANCE XR524-8C, 2x230V (L3 int.)
0 < *
Siemens / SCALANCE XR526-8C, 1x230V
0 < *
Siemens / SCALANCE XR526-8C, 1x230V (L3 int.)
0 < *
Siemens / SCALANCE XR526-8C, 24V
0 < *
Siemens / SCALANCE XR526-8C, 24V (L3 int.)
0 < *
Siemens / SCALANCE XR526-8C, 2x230V
0 < *
Siemens / SCALANCE XR526-8C, 2x230V (L3 int.)
0 < *
Siemens / SCALANCE XR528-6M
0 < *
Siemens / SCALANCE XR528-6M (2HR2, L3 int.)
0 < *
Siemens / SCALANCE XR528-6M (2HR2)
0 < *
Siemens / SCALANCE XR528-6M (L3 int.)
0 < *
Siemens / SCALANCE XR552-12M
0 < *
Siemens / SCALANCE XR552-12M (2HR2, L3 int.)
0 < *
Siemens / SCALANCE XR552-12M (2HR2)
0 < *
Siemens / SCALANCE XR552-12M (2HR2)
0 < *
Siemens / SIMATIC CFU DIQ
0 < V2.0.0
Siemens / SIMATIC CFU PA
0 < V2.0.0
Siemens / SIMATIC CFU PA
0 < V2.0.0
Siemens / SIMATIC ET 200pro IM 154-8 PN/DP CPU
0 < *
Siemens / SIMATIC ET 200pro IM 154-8F PN/DP CPU
0 < *
Siemens / SIMATIC ET 200pro IM 154-8FX PN/DP CPU
0 < *
Siemens / SIMATIC ET 200S IM 151-8 PN/DP CPU
0 < *
Siemens / SIMATIC ET 200S IM 151-8F PN/DP CPU
0 < *
Siemens / SIMATIC ET 200SP CPU 1510SP F-1 PN
0 < *
Siemens / SIMATIC ET 200SP CPU 1510SP-1 PN
0 < *
Siemens / SIMATIC ET 200SP CPU 1512SP F-1 PN
0 < *
Siemens / SIMATIC ET 200SP CPU 1512SP-1 PN
0 < *
Siemens / SIMATIC ET 200SP HA IM155-6 PN
0 < V1.3
Siemens / SIMATIC S7-1500 CPU 1511-1 PN
0 < *
Siemens / SIMATIC S7-1500 CPU 1511F-1 PN
0 < *
Siemens / SIMATIC S7-1500 CPU 1513-1 PN
0 < *
Siemens / SIMATIC S7-1500 CPU 1515-2 PN
0 < *
Siemens / SIMATIC S7-1500 CPU 1515F-2 PN
0 < *
Siemens / SIMATIC S7-1500 CPU 1516-3 PN/DP
0 < *
Siemens / SIMATIC S7-1500 CPU 1516F-3 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 314C-2 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 315-2 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 315F-2 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 315T-3 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 317-2 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 317F-2 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 317T-3 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 317TF-3 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 319-3 PN/DP
0 < *
Siemens / SIMATIC S7-300 CPU 319F-3 PN/DP
0 < *
Siemens / SIMATIC S7-400 CPU 412-2 PN V7
0 < *
Siemens / SIMATIC S7-400 CPU 414-3 PN/DP V7
0 < *
Siemens / SIMATIC S7-400 CPU 414F-3 PN/DP V7
0 < *
Siemens / SIMATIC S7-400 CPU 416-3 PN/DP V7
0 < *
Siemens / SIMATIC S7-400 CPU 416F-3 PN/DP V7
0 < *
Siemens / SIMATIC S7-400 H V6 CPU family (incl. SIPLUS variants)
0 < *
Siemens / SIMATIC S7-410 V10 CPU family (incl. SIPLUS variants)
0 < V10.2
Siemens / SIMATIC S7-410 V8 CPU family (incl. SIPLUS variants)
0 < V8.3
Siemens / SIMIT UNIT V10
0 < *
Siemens / SIMIT UNIT V11
0 < *
Siemens / SINAMICS CBE20
0 < *
Siemens / SINAMICS G115D
0 < *
Siemens / SINAMICS G120 (incl. SIPLUS variants)
0 < *
Siemens / SINAMICS G120C
0 < *
Siemens / SINAMICS G120D
0 < *
Siemens / SINAMICS G120X
0 < *
Siemens / SINAMICS G120XA
0 < *
Siemens / SINAMICS G130
0 < *
Siemens / SINAMICS G150
0 < *
Siemens / SINAMICS S110
0 < *
Siemens / SINAMICS S120 (incl. SIPLUS variants)
0 < *
Siemens / SINAMICS S150
0 < *
Siemens / SINUMERIK 840D sl
0 < *
Siemens / SIPLUS ET 200S IM 151-8 PN/DP CPU
0 < *
Siemens / SIPLUS ET 200S IM 151-8F PN/DP CPU
0 < *
Siemens / SIPLUS NET IE/PB link PN IO
0 < *
Siemens / SIPLUS S7-300 CPU 314C-2 PN/DP
0 < *
Siemens / SIPLUS S7-300 CPU 315-2 PN/DP
0 < *
Siemens / SIPLUS S7-300 CPU 315F-2 PN/DP
0 < *
Siemens / SIPLUS S7-300 CPU 317-2 PN/DP
0 < *
Siemens / SIPLUS S7-300 CPU 317F-2 PN/DP
0 < *
Siemens / SIPLUS S7-400 CPU 414-3 PN/DP V7
0 < *
Siemens / SIPLUS S7-400 CPU 416-3 PN/DP V7
0 < *
Siemens / SITOP PSU8600 1AC 20 A/4x5 A PN
0 < *
Siemens / SITOP PSU8600 3AC 20 A PN
0 < *
Siemens / SITOP PSU8600 3AC 20 A/4x5 A PN
0 < *
Siemens / SITOP PSU8600 3AC 40 A PN
0 < *
Siemens / SITOP PSU8600 3AC 40 A/4x10 A PN
0 < *
Siemens / SITOP PSU8600 3AC 40 A/4x10A EIP
0 < *
Siemens / SITOP UPS1600 10 A Ethernet/ PROFINET
0 < *
Siemens / SITOP UPS1600 20 A Ethernet/ PROFINET
0 < *
Siemens / SITOP UPS1600 40 A Ethernet/ PROFINET
0 < *
Siemens / SITOP UPS1600 EX 20 A Ethernet PROFINET
0 < *

References

NVD ↗ CVE.org ↗ EPSS Data ↗
cert-portal.siemens.com: https://cert-portal.siemens.com/productcert/html/ssa-392349.html