CVE-2025-52964
Junos OS and Junos OS Evolved: Receipt of a specific BGP UPDATE causes an rpd crash on devices with BGP multipath configured
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS:
- All versions before 21.4R3-S7,
- from 22.3 before 22.3R3-S3,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2,
- from 23.4 before 23.4R2.
Junos OS Evolved:
- All versions before 21.4R3-S7-EVO,
- from 22.3 before 22.3R3-S3-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-EVO,
- from 23.4 before 23.4R2-EVO.
Attack profile
How easy it is to exploit
- Attack vector
- Adjacent network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Junos OS and Junos OS Evolved: Receipt of a specific BGP UPDATE causes an rpd crash on devices with BGP multipath configured
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS:
- All versions before 21.4R3-S7,
- from 22.3 before 22.3R3-S3,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2,
- from 23.4 before 23.4R2.
Junos OS Evolved:
- All versions before 21.4R3-S7-EVO,
- from 22.3 before 22.3R3-S3-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-EVO,
- from 23.4 before 23.4R2-EVO.
- Record
CVE-2025-52964- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-617
- Updated
- 2026-11-02
EUVDEUVD-2025-21152
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS:
- All versions before 21.4R3-S7,
- from 22.3 before 22.3R3-S3,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2,
- from 23.4 before 23.4R2.
Junos OS Evolved:
- All versions before 21.4R3-S7-EVO,
- from 22.3 before 22.3R3-S3-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-EVO,
- from 23.4 before 23.4R2-EVO.
- Record
EUVD-2025-21152- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-jrx6-pjgp-jh2q
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks...
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS:
- All versions before 21.4R3-S7,
- from 22.3 before 22.3R3-S3,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2,
- from 23.4 before 23.4R2.
Junos OS Evolved:
- All versions before 21.4R3-S7-EVO,
- from 22.3 before 22.3R3-S3-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-EVO,
- from 23.4 before 23.4R2-EVO.
- Record
GHSA-jrx6-pjgp-jh2q- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-617
- Updated
- 2026-11-02
NVD
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS:
- All versions before 21.4R3-S7,
- from 22.3 before 22.3R3-S3,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2,
- from 23.4 before 23.4R2.
Junos OS Evolved:
- All versions before 21.4R3-S7-EVO,
- from 22.3 before 22.3R3-S3-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-EVO,
- from 23.4 before 23.4R2-EVO.
- Record
CVE-2025-52964- CVSS 4.0
- 7.1 High
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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:X/R:X/V:X/RE:X/U:X - CVSS 3.1
- 6.5 Medium
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-617
- 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-2025-52964 is a high vulnerability (CVSS 7.1) in Juniper Junos, published July 11, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.30%, the 23rd percentile. No source names a fixed version.