CVE-2025-40833
Siemens · published 2026-05-12
Source record Collected from the National Vulnerability Database (NVD)
Description
Description by Siemens AG via the CVE Program.
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.
Status at the source
- NVD status: Awaiting Analysis — NVD has not analysed this CVE.
Affected products, as the source lists them
| Vendor | Product | Versions |
|---|---|---|
| Siemens | IE/PB LINK HA | 0 – before V4.1.2: affected |
| Siemens | IE/PB link PN IO | 0 – before *: affected |
| Siemens | RUGGEDCOM RM1224 LTE(4G) EU | 0 – before V8.3: affected |
| Siemens | RUGGEDCOM RM1224 LTE(4G) NAM | 0 – before V8.3: affected |
| Siemens | SCALANCE M804PB | 0 – before V8.3: affected |
| Siemens | SCALANCE M812-1 ADSL-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE M812-1 ADSL-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE M816-1 ADSL-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE M816-1 ADSL-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE M826-2 SHDSL-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE M874-2 | 0 – before V8.3: affected |
| Siemens | SCALANCE M874-3 | 0 – before V8.3: affected |
| Siemens | SCALANCE M874-3 3G-Router (CN) | 0 – before V8.3: affected |
| Siemens | SCALANCE M876-3 | 0 – before V8.3: affected |
| Siemens | SCALANCE M876-3 (ROK) | 0 – before V8.3: affected |
| Siemens | SCALANCE M876-4 | 0 – before V8.3: affected |
| Siemens | SCALANCE M876-4 (EU) | 0 – before V8.3: affected |
| Siemens | SCALANCE M876-4 (NAM) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUB852-1 (A1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUB852-1 (B1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM853-1 (A1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM853-1 (B1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM853-1 (EU) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM856-1 (A1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM856-1 (B1) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM856-1 (CN) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM856-1 (EU) | 0 – before V8.3: affected |
| Siemens | SCALANCE MUM856-1 (RoW) | 0 – before V8.3: affected |
| Siemens | SCALANCE S615 EEC LAN-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE S615 LAN-Router | 0 – before V8.3: affected |
| Siemens | SCALANCE SC622-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE SC626-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE SC632-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE SC636-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE SC642-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE SC646-2C | 0 – before V3.2: affected |
| Siemens | SCALANCE W1748-1 M12 | 0 – before *: affected |
| Siemens | SCALANCE W1748-1 M12 | 0 – before *: affected |
| Siemens | SCALANCE W1788-1 M12 | 0 – before *: affected |
| Siemens | SCALANCE W1788-2 EEC M12 | 0 – before *: affected |
| Siemens | SCALANCE W1788-2 M12 | 0 – before *: affected |
| Siemens | SCALANCE W1788-2IA M12 | 0 – before *: affected |
| Siemens | SCALANCE W721-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W721-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W722-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W722-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W722-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W734-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W734-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W734-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W734-1 RJ45 (USA) | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W738-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W738-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W748-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W748-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W748-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W748-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W761-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W761-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W774-1 RJ45 (USA) | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W778-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W778-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W778-1 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W778-1 M12 EEC (USA) | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2 SFP | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2 SFP | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2IA RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W786-2IA RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-1 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-1 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 M12 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 M12 EEC | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE W788-2 RJ45 | 0 – before V6.6.0: affected |
| Siemens | SCALANCE WAB762-1 | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM763-1 | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM763-1 (ME) | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM763-1 (US) | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM766-1 | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM766-1 (ME) | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM766-1 (US) | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM766-1 EEC | 0 – before V3.2.0: affected |
| Siemens | SCALANCE WAM766-1 EEC (ME) | 0 – before V3.2.0: affected |
The source lists more products than DeSpy shows; see the source record.
DeSpy has not checked any unit, hardware revision or firmware. A product missing here is not a statement that it is unaffected.
Scores, as their sources published them
- CVSS 4.0: 8.7 HIGH — as published by Siemens AG (Secondary)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS 3.1: 7.5 HIGH — as published by Siemens AG (Secondary)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - SSVC — CISA's assessment (SSVC 2.0.3, CISA Coordinator): Exploitation: none · Automatable: yes · Technical impact: partial
DeSpy does not score records. These are the sources' own values.
Weaknesses
Sources
References the source lists
Source dates: published 2026-05-12, last changed 2026-08-11. DeSpy's copy of this version is dated 2026-09-28.
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