Improper control of a resource through its lifetime in Junos OS Evolved and Junos OS - CVE-2025-21593
Published: January 10, 2025
Vulnerability identifier: #VU102521
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2025-21593
CWE-ID: CWE-664
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to an improper control of a resource through its lifetime in the routing protocol daemon (rpd). A remote attacker can send a malformed BGP UPDATE packet to the affected device and perform a denial of service attack.
The vulnerability affects iBGP and eBGP, and both IPv4 and IPv6 protocols.
Affected software
Junos OS Evolved
Junos OS
Junos OS
How to mitigate CVE-2025-21593
Install updates from vendor's website.
Junos OS Evolved - addressed in versions 21.2R3-S9-EVO, 21.4R3-S10-EVO, 22.2R3-S5-EVO, 22.3R3-S4-EVO, 22.4R3-S3-EVO, 23.2R2-S2-EVO, 23.4R2-EVO, 24.2R1-EVO
Junos OS - addressed in versions 21.2R3-S9, 21.4R3-S10, 22.2R3-S5, 22.3R3-S4, 22.4R3-S3, 23.2R2-S2, 23.4R2, 24.2R1
Junos OS - addressed in versions 21.2R3-S9, 21.4R3-S10, 22.2R3-S5, 22.3R3-S4, 22.4R3-S3, 23.2R2-S2, 23.4R2, 24.2R1