Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UPDATE packet forces a BGP session reset
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS | unaffected |
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| Juniper Networks | Junos OS Evolved | unaffected |
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Configuration 1 [-]
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No data.
| Vendor | Product | Versions |
|---|---|---|
| Juniper Networks | Junos Os | — |
| Juniper Networks | Junos Os Evolved | — |
Vendor Solution
The following software releases have been updated to resolve this specific issue: Junos OS: 21.2R3-S9, 21.4R3-S11, 22.2R3-S7, 22.4R3-S7, 23.2R2-S4, 23.4R2-S4, 24.2R2, 24.4R1-S3, 24.4R2, 25.2R1, and all subsequent releases. Junos OS Evolved: 22.2R3-S7-EVO, 22.4R3-S7-EVO, 23.2R2-S4-EVO, 23.4R2-S4-EVO, 24.2R2-EVO, 24.4R1-S3-EVO, 24.4R2-EVO, 25.2R1-EVO, and all subsequent releases.
Vendor Workaround
There are no known workarounds for this issue.
| Source | ID | Title |
|---|---|---|
EUVD |
EUVD-2025-21156 | An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2, * from 24.4 before 24.4R1-S3, 24.4R2 Junos OS Evolved: * All versions before 22.2R3-S7-EVO, * from 22.4-EVO before 22.4R3-S7-EVO, * from 23.2-EVO before 23.2R2-S4-EVO, * from 23.4-EVO before 23.4R2-S4-EVO, * from 24.2-EVO before 24.2R2-EVO, * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO. |
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.327% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Juniper
Juniper junos Juniper junos Os Evolved |
|
| CPEs | cpe:2.3:o:juniper:junos:*:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s7:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3-s8:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.2:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s10:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s7:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s8:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3-s9:*:*:*:*:*:* cpe:2.3:o:juniper:junos:21.4:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.2:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos:22.4:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r2-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r2-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos:23.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.2:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s4:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s5:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3-s6:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:22.4:r3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.2:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r1-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s3:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:23.4:r2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.2:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.2:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.2:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.4:-:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.4:r1-s2:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.4:r1:*:*:*:*:*:* cpe:2.3:o:juniper:junos_os_evolved:24.4:r2:*:*:*:*:*:* |
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| Vendors & Products |
Juniper
Juniper junos Juniper junos Os Evolved |
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
epss
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| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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| Type | Values Removed | Values Added |
|---|---|---|
| Description | An Expected Behavior Violation vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a valid BGP UPDATE packet to cause a BGP session reset, resulting in a Denial of Service (DoS). Continuous receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects iBGP and eBGP and both IPv4 and IPv6 are affected by this vulnerability. This issue affects Junos OS: * All versions before 21.2R3-S9, * from 21.4 before 21.4R3-S11, * from 22.2 before 22.2R3-S7, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S4, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2, * from 24.4 before 24.4R1-S3, 24.4R2 Junos OS Evolved: * All versions before 22.2R3-S7-EVO, * from 22.4-EVO before 22.4R3-S7-EVO, * from 23.2-EVO before 23.2R2-S4-EVO, * from 23.4-EVO before 23.4R2-S4-EVO, * from 24.2-EVO before 24.2R2-EVO, * from 24.4-EVO before 24.4R1-S3-EVO, 24.4R2-EVO. | |
| Title | Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UPDATE packet forces a BGP session reset | |
| Weaknesses | CWE-440 | |
| References |
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| Metrics |
cvssV3_1
|