Junos OS: SRX Series and EX Series: Security Vulnerability in J-web allows a preAuth Remote Code Execution
33Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 18%
exploitation probability
18%top 3% of all CVEs
observed exploitation
nono source reports it
An Out-of-bounds Write vulnerability in J-Web of Juniper Networks Junos OS on SRX Series and EX Series allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS), or Remote Code Execution (RCE) and obtain root privileges on the device.
This issue is caused by use of an insecure function allowing an attacker to overwrite arbitrary memory.
This issue affects Juniper Networks Junos OS SRX Series and EX Series:
* Junos OS versions earlier than 20.4R3-S9;
* Junos OS 21.2 versions earlier than 21.2R3-S7;
* Junos OS 21.3 versions earlier than 21.3R3-S5;
* Junos OS 21.4 versions earlier than 21.4R3-S5;
* Junos OS 22.1 versions earlier than 22.1R3-S4;
* Junos OS 22.2 versions earlier than 22.2R3-S3;
* Junos OS 22.3 versions earlier than 22.3R3-S2;
* Junos OS 22.4 versions earlier than 22.4R2-S2, 22.4R3.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Juniper Networks · Junos OS