CVE-2026-21918
EUVD-2026-269715.01.2026, 21:16
A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On all SRX and MX Series platforms, when during TCP session establishment a specific sequence of packets is encountered a double free happens. This causes flowd to crash and the respective FPC to restart. This issue affects Junos OS on SRX and MX Series: * all versions before 22.4R3-S7, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| juniper | junos | 𝑥 < 22.4 |
| juniper | junos | 22.4 |
| juniper | junos | 22.4:r1 |
| juniper | junos | 22.4:r1-s1 |
| juniper | junos | 22.4:r1-s2 |
| juniper | junos | 22.4:r2 |
| juniper | junos | 22.4:r2-s1 |
| juniper | junos | 22.4:r2-s2 |
| juniper | junos | 22.4:r3 |
| juniper | junos | 22.4:r3-s1 |
| juniper | junos | 22.4:r3-s2 |
| juniper | junos | 22.4:r3-s3 |
| juniper | junos | 22.4:r3-s4 |
| juniper | junos | 22.4:r3-s5 |
| juniper | junos | 22.4:r3-s6 |
| juniper | junos | 23.2 |
| juniper | junos | 23.2:r1 |
| juniper | junos | 23.2:r1-s1 |
| juniper | junos | 23.2:r1-s2 |
| juniper | junos | 23.2:r2 |
| juniper | junos | 23.2:r2-s1 |
| juniper | junos | 23.2:r2-s2 |
| juniper | junos | 23.4 |
| juniper | junos | 23.4:r1 |
| juniper | junos | 23.4:r1-s1 |
| juniper | junos | 23.4:r1-s2 |
| juniper | junos | 23.4:r2 |
| juniper | junos | 23.4:r2-s1 |
| juniper | junos | 23.4:r2-s2 |
| juniper | junos | 23.4:r2-s3 |
| juniper | junos | 24.2 |
| juniper | junos | 24.2:r1 |
| juniper | junos | 24.2:r1-s1 |
| juniper | junos | 24.2:r1-s2 |
𝑥
= Vulnerable software versions
Common Weakness Enumeration