CVE-2026-57023
EUVD-2026-4271109.07.2026, 22:17
An Improper Validation of Specified Quantity in Input vulnerability in the TCP proxy plugin of Juniper Networks Junos OS on MX Series with SPC3, and SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial of Service (DoS). When TCP proxy is engaged in a flow session, to support ALGs, Advanced Anti-Malware, ICAP or UTM, a TCP packet with specifically malformed TCP header will cause flow processing daemon (flowd) to crash and restart. This causes a complete service outage until the system has automatically recovered. This issue affects Junos OS on MX with SPC3, and SRX Series: * 23.4 versions before 23.4R2-S7, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2. This issue does not affect releases before 23.4R1.Enginsight
Affected Products (NVD)
| Vendor | Product | Version |
|---|---|---|
| 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 | 23.4:r2-s4 |
| juniper | junos | 23.4:r2-s5 |
| juniper | junos | 23.4:r2-s6 |
| juniper | junos | 24.2 |
| juniper | junos | 24.2:r1 |
| juniper | junos | 24.2:r1-s1 |
| juniper | junos | 24.2:r1-s2 |
| juniper | junos | 24.2:r2 |
| juniper | junos | 24.2:r2-s1 |
| juniper | junos | 24.2:r2-s2 |
| juniper | junos | 24.2:r2-s3 |
| juniper | junos | 24.4 |
| juniper | junos | 24.4:r1 |
| juniper | junos | 24.4:r1-s2 |
| juniper | junos | 24.4:r1-s3 |
| juniper | junos | 24.4:r2 |
| juniper | junos | 24.4:r2-s1 |
| juniper | junos | 24.4:r2-s2 |
| juniper | junos | 25.2 |
| juniper | junos | 25.2:r1 |
| juniper | junos | 25.2:r1-s1 |
| juniper | junos | 25.2:r1-s2 |
𝑥
= Vulnerable software versions