Main Vulnerability Database SB2025071854

SB2025071854 - Improper Check for Unusual or Exceptional Conditions in Juniper Junos OS

Published: July 18, 2025

Security Bulletin ID SB2025071854

CSH Severity

Medium

Patch available

YES

Number of vulnerabilities 1

Exploitation vector Remote access

Highest impact Denial of service

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 1 vulnerability.

1) Improper Check for Unusual or Exceptional Conditions (CVE-ID: CVE-2025-52981)

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

CVSSv4: 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/E:U/U:Green

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.

Remediation

Install update from vendor's website.

References

https://supportportal.juniper.net/s/article/2025-07-Security-Bulletin-Junos-OS-SRX-Series-Sequence-of-specific-PIM-packets-causes-a-flowd-crash-CVE-2025-52981