CVE-2025-21602
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An Improper Handling of Exceptional Conditions vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated adjacent attacker sending a specific BGP update packet to cause rpd to crash and restart, 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:
- from 21.4 before 21.4R3-S9,
- from 22.2 before 22.2R3-S5,
- from 22.3 before 22.3R3-S4,
- from 22.4 before 22.4R3-S5,
- from 23.2 before 23.2R2-S3,
- from 23.4 before 23.4R2-S3,
- from 24.2 before 24.2R1-S2, 24.2R2;
This issue does not affect versions prior to 21.1R1.
Junos OS Evolved:
- from 21.4 before 21.4R3-S9-EVO,
- from 22.2 before 22.2R3-S5-EVO,
- from 22.3 before 22.3R3-S4-EVO,
- from 22.4 before 22.4R3-S5-EVO,
- from 23.2 before 23.2R2-S3-EVO,
- from 23.4 before 23.4R2-S3-EVO,
- from 24.2 before 24.2R1-S2-EVO, 24.2R2-EVO.
This issue does not affect versions prior to 21.1R1-EVO
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Juniper Networks | Junos OS | 21.4 < 21.4R3-S9 | affected |
| Juniper Networks | Junos OS | 22.2 < 22.2R3-S5 | affected |
| Juniper Networks | Junos OS | 22.3 < 22.3R3-S4 | affected |
| Juniper Networks | Junos OS | 22.4 < 22.4R3-S5 | affected |
| Juniper Networks | Junos OS | 23.2 < 23.2R2-S3 | affected |
| Juniper Networks | Junos OS | 23.4 < 23.4R2-S3 | affected |
| Juniper Networks | Junos OS | 24.2 < 24.2R1-S2, 24.2R2 | affected |
| Juniper Networks | Junos OS | 0 < 21.3R1 | unaffected |
| Juniper Networks | Junos OS Evolved | 21.4 < 21.4R3-S9-EVO | affected |
| Juniper Networks | Junos OS Evolved | 22.2 < 22.2R3-S5-EVO | affected |
| Juniper Networks | Junos OS Evolved | 22.3 < 22.3R3-S4-EVO | affected |
| Juniper Networks | Junos OS Evolved | 22.4 < 22.4R3-S5-EVO | affected |
| Juniper Networks | Junos OS Evolved | 23.2 < 23.2R2-S3-EVO | affected |
| Juniper Networks | Junos OS Evolved | 23.4 < 23.4R2-S3-EVO | affected |
| Juniper Networks | Junos OS Evolved | 24.2 < 24.2R1-S2-EVO, 24.2R2-EVO | affected |
| Juniper Networks | Junos OS Evolved | 0 < 21.3R1-EVO | unaffected |
Weaknesses
- CWE-755: CWE-755 Improper Handling of Exceptional Conditions
Workarounds
There are no known workarounds for this issue.
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
References
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