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.
Scoring
- Severity
- HIGH
- CVSS base score
- 8.7
- CVSS vector
- 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
- EPSS probability
- 0.32%
- CWE
- CWE-476
- Published
- 2026-05-12
- Last modified
- 2026-08-11
Affected products
- Siemens IE/PB LINK HA
- Siemens IE/PB link PN IO
- Siemens RUGGEDCOM RM1224 LTE(4G) EU
- Siemens RUGGEDCOM RM1224 LTE(4G) NAM
- Siemens SCALANCE M804PB
- Siemens SCALANCE M812-1 ADSL-Router
- Siemens SCALANCE M816-1 ADSL-Router
- Siemens SCALANCE M826-2 SHDSL-Router
Weakness type
Related vulnerabilities
- CVE-2026-55209 — resdata insufficiently validates untrusted GRDECL files
- CVE-2026-58161 — Apache Traffic Server: Memory-safety errors in TLS and SNI handling can crash the server
- CVE-2026-42766 — Possible NULL Dereference in Password-Based CMS Decryption
- CVE-2026-60109 — Zeek < 8.0.9 Null Pointer Dereference DoS via Kerberos KRB_ERROR Parsing
- CVE-2026-67304 — FreeRDP before 3.29.0 NULL Dereference via smartcard cleanup
- CVE-2026-67288 — FreeRDP before 3.29.0 Denial of Service via smartcard cache
- CVE-2026-55204 — HAProxy - NULL Pointer Dereference in hpack_dht_insert Function
- CVE-2026-13084 — Null Pointer Dereference in WatchGuard Fireware OS iked Process