CVE-2025-60011: Junos OS and Junos OS Evolved: Optional transitive BGP attribute is modified before propagation to peers causing sessions to flap
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause an availability impact for downstream devices.
When an affected device receives a specific optional, transitive BGP attribute over an existing BGP session, it will be erroneously modified before propagation to peers. When the attribute is detected as malformed by the peers, these peers will most likely terminate the BGP sessions with the affected devices and thereby cause an availability impact due to the resulting routing churn.
This issue affects:
Junos OS:
all versions before 22.4R3-S8, 23.2 versions before 23.2R2-S5 23.4 versions before 23.4R2-S6, 24.2 versions before 24.2R2-S2, 24.4 versions before 24.4R2;
Junos OS Evolved:
all versions before 22.4R3-S8-EVO, 23.2 versions before 23.2R2-S5-EVO, 23.4 versions before 23.4R2-S6-EVO, 24.2 versions before 24.2R2-S2-EVO, 24.4 versions before 24.4R2-EVO.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-60011?
CVE-2025-60011 has been classified as a high-severity vulnerability due to its potential impact on network stability.
How do I fix CVE-2025-60011?
To fix CVE-2025-60011, update your Junos OS or Junos OS Evolved to a version that is not affected by this vulnerability.
What products are affected by CVE-2025-60011?
CVE-2025-60011 affects specific versions of Juniper Networks' Junos OS and Junos OS Evolved up to certain listed versions.
What is the main risk associated with CVE-2025-60011?
The main risk of CVE-2025-60011 is the potential for BGP sessions to flap, leading to possible network instability and service disruption.
Is there a known workaround for CVE-2025-60011?
Currently, there are no documented workarounds for CVE-2025-60011, and updating the software is the recommended solution.