CVE-2026-21917
8.7
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:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:XShow more
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:X/RE:M/U:XShow less
Source: sirt@juniper.net (Secondary)
Description
An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
If an SRX device configured for UTM Web-Filtering receives a specifically malformed SSL packet, this will cause an FPC crash and restart.
This issue affects Junos OS on SRX Series:
* 23.2 versions from 23.2R2-S2 before 23.2R2-S5,
* 23.4 versions from 23.4R2-S1 before 23.4R2-S5,
* 24.2 versions before 24.2R2-S2,
* 24.4 versions before 24.4R1-S3, 24.4R2.
Earlier versions of Junos are also affected, but no fix is available.
Affected (17)
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Version 23.2 r2-s2 |
| Running on/with | Platform Versions |
|---|---|
Juniper Srx1500 | All versions |
Juniper Srx1600 | All versions |
Juniper Srx2300 | All versions |
Juniper Srx300 | All versions |
Juniper Srx320 | All versions |
Juniper Srx340 | All versions |
Juniper Srx345 | All versions |
Juniper Srx380 | All versions |
Juniper Srx4100 | All versions |
Juniper Srx4120 | All versions |
Juniper Srx4200 | All versions |
Juniper Srx4300 | All versions |
Juniper Srx4600 | All versions |
Juniper Srx4700 | All versions |
Juniper Srx5400 | All versions |
Juniper Srx5600 | All versions |
Juniper Srx5800 | All versions |
References (2)
Timeline
No history available yet.