CVE-2025-30645
A NULL Pointer Dereference vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker causing specific, valid control traffic to be sent out of a Dual-Stack (DS) Lite tunnel to crash the flowd process, resulting in a Denial of Service (DoS). Continuous triggering of specific control traffic will create a sustained Denial of Service (DoS) condition. On all SRX platforms, when specific, valid control traffic needs to be sent out of a DS-Lite tunnel, a segmentation fault occurs within the flowd process, resulting in a network outage until the flowd process restarts. This issue affects Junos OS on SRX Series: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S9, * from 22.2 before 22.2R3-S5, * from 22.4 before 22.4R3-S6, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2.
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/AU:Y/R:A/V:C/RE:M/U:Green
- EPSS probability
- 0.42%
- CWE
- CWE-476
- Published
- 2025-04-09
- Last modified
- 2026-03-12
Affected products
- Juniper Networks Junos OS
- Juniper Networks Junos OS
- Juniper Networks Junos OS
- Juniper Networks Junos OS
- Juniper Networks Junos OS
- Juniper Networks Junos OS
Weakness type
Related vulnerabilities
- CVE-2026-86547 — mrubyc through 4.0.0 NULL Pointer Dereference via OP_ENTER
- CVE-2026-66303 — Skype for Business and Lync Denial of Service Vulnerability
- CVE-2026-77901 — Microsoft Office Word Remote Code Execution Vulnerability
- CVE-2026-70575 — Windows Schannel Denial of Service Vulnerability
- CVE-2026-69881 — Windows Internet Key Exchange (IKE) Extension Denial of Service Vulnerability
- CVE-2026-69384 — Virtual Hard Disk (VHD) Miniport Driver Denial of Service Vulnerability
- CVE-2026-62762 — Windows Active Directory Domain Services Denial of Service Vulnerability
- CVE-2026-72949 — Windows SMB Server Network Transport Driver (srvnet.sys) Denial of Service Vulnerability