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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
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.
- Record
CVE-2025-60011- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M - CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L - Weakness
- CWE-754
- Updated
- 2026-11-02
EUVDEUVD-2026-2713
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.
- Record
EUVD-2026-2713- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-9j3f-4m2h-6f2h
An Improper Check for Unusual or Exceptional Conditions vulnerability in the routing protocol...
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.
- Record
GHSA-9j3f-4m2h-6f2h- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X - CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L - Weakness
- CWE-754
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2025-60011- CVSS 4.0
- 6.9 Medium
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:X - CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L - Weakness
- CWE-754
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-60011 is a medium vulnerability (CVSS 6.9) in Juniper Junos, published January 15, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.46%, the 40th percentile. No source names a fixed version.