NULL pointer dereference in Siemens Ie/pb Link Ha
CVE-2025-40833
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.
EPSS: 0.001 (16.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Siemens Ie/pb Link Ha — versions 0
- Siemens Ie/pb Link Pn Io — versions 0
- Siemens Ruggedcom Rm1224 Lte(4g) Eu — versions 0
- Siemens Ruggedcom Rm1224 Lte(4g) Nam — versions 0
- Siemens Scalance M804pb — versions 0
- Siemens Scalance M812-1 Adsl-router — versions 0
- Siemens Scalance M816-1 Adsl-router — versions 0
- Siemens Scalance M826-2 Shdsl-router — versions 0
- Siemens Scalance M874-2 — versions 0
- Siemens Scalance M874-3 — versions 0
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2025-40833?
- CVE-2025-40833 is a high-severity vulnerability in Siemens Ie/pb Link Ha, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2026-05-12.
- How severe is CVE-2025-40833?
- High severity. CVSS v3 base score is 7.5 out of 10.