Improper Check for Unusual or Exceptional Conditions in Junos OS - CVE-2025-52981
Published: July 18, 2025
Vulnerability identifier: #VU113067
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-2025-52981
CWE-ID: CWE-754
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check for unusual or exceptional conditions error in the flow processing daemon (flowd). A remote non-authenticated attacker can cause a Denial-of-Service (DoS).
If a sequence of specific PIM packets is received, this will cause a flowd crash and restart.
Affected software
Junos OS
How to mitigate CVE-2025-52981
Install updates from vendor's website.
Junos OS - addressed in versions 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S6, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1