Junos OS and Junos OS Evolved: With BGP sharding enabled, change in indirect next-hop can cause RPD crash
Summary
| CVE | CVE-2025-59962 |
|---|---|
| State | PUBLISHED |
| Assigner | juniper |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2025-10-09 16:15:46 UTC |
| Updated | 2026-06-17 09:46:56 UTC |
| Description | An Access of Uninitialized Pointer vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved with BGP sharding configured allows an attacker triggering indirect next-hop updates, along with timing outside the attacker's control, to cause rpd to crash and restart, leading to a Denial of Service (DoS). With BGP sharding enabled, triggering route resolution of an indirect next-hop (e.g., an IGP route change over which a BGP route gets resolved), may cause rpd to crash and restart. An attacker causing continuous IGP route churn, resulting in repeated route re-resolution, will increase the likelihood of triggering this issue, leading to a potentially extended DoS condition. This issue affects: Junos OS: * all versions before 21.4R3-S6, * from 22.1 before 22.1R3-S6, * from 22.2 before 22.2R3-S3, * from 22.3 before 22.3R3-S3, * from 22.4 before 22.4R3, * from 23.2 before 23.2R2; Junos OS Evolved: * all versions before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-EVO, * from 23.2 before 23.2R2-EVO. Versions before Junos OS 21.3R1 and Junos OS Evolved 21.3R1-EVO are unaffected by this issue. |
Risk And Classification
Primary CVSS: v4.0 6 MEDIUM from [email protected]
CVSS:4.0/AV:A/AC:L/AT:P/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:Y/R:A/V:C/RE:M/U:X
EPSS: 0.001770000 probability, percentile 0.067440000 (date 2026-10-18)
Problem Types: CWE-824 | CWE-824 CWE-824 Access of Uninitialized Pointer
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 6 | MEDIUM | CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/C... |
| 4.0 | CNA | CVSS | 6 | MEDIUM | CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/... |
| 3.1 | [email protected] | Secondary | 5.3 | MEDIUM | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 3.1 | CNA | CVSS | 5.3 | MEDIUM | CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVSS v4.0 Breakdown
Attack Vector
AdjacentAttack Complexity
LowAttack Requirements
PresentPrivileges Required
NoneUser Interaction
NoneConfidentiality
NoneIntegrity
NoneAvailability
HighSub Conf.
NoneSub Integrity
NoneSub Availability
LowCVSS:4.0/AV:A/AC:L/AT:P/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:Y/R:A/V:C/RE:M/U:X
CVSS v3.1 Breakdown
Attack Vector
AdjacentAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Juniper | Junos | All | All | All | All |
| Operating System | Juniper | Junos | 21.4 | - | All | All |
| Operating System | Juniper | Junos | 21.4 | r1 | All | All |
| Operating System | Juniper | Junos | 21.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 21.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 21.4 | r2 | All | All |
| Operating System | Juniper | Junos | 21.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 21.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 21.4 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 22.1 | - | All | All |
| Operating System | Juniper | Junos | 22.1 | r1 | All | All |
| Operating System | Juniper | Junos | 22.1 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 22.1 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 22.1 | r2 | All | All |
| Operating System | Juniper | Junos | 22.1 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 22.1 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3-s3 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3-s4 | All | All |
| Operating System | Juniper | Junos | 22.1 | r3-s5 | All | All |
| Operating System | Juniper | Junos | 22.2 | - | All | All |
| Operating System | Juniper | Junos | 22.2 | r1 | All | All |
| Operating System | Juniper | Junos | 22.2 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 22.2 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 22.2 | r2 | All | All |
| Operating System | Juniper | Junos | 22.2 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 22.2 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 22.2 | r3 | All | All |
| Operating System | Juniper | Junos | 22.2 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 22.2 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 22.3 | - | All | All |
| Operating System | Juniper | Junos | 22.3 | r1 | All | All |
| Operating System | Juniper | Junos | 22.3 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 22.3 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 22.3 | r2 | All | All |
| Operating System | Juniper | Junos | 22.3 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 22.3 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 22.3 | r3 | All | All |
| Operating System | Juniper | Junos | 22.3 | r3-s1 | All | All |
| Operating System | Juniper | Junos | 22.3 | r3-s2 | All | All |
| Operating System | Juniper | Junos | 22.4 | - | All | All |
| Operating System | Juniper | Junos | 22.4 | r1 | All | All |
| Operating System | Juniper | Junos | 22.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 22.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos | 22.4 | r2 | All | All |
| Operating System | Juniper | Junos | 22.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos | 22.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos | 23.2 | - | All | All |
| Operating System | Juniper | Junos | 23.2 | r1 | All | All |
| Operating System | Juniper | Junos | 23.2 | r1-s1 | All | All |
| Operating System | Juniper | Junos | 23.2 | r1-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | All | All | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | - | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r1-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r1-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r2-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r2-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r3 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r3-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.3 | r3-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | - | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r1-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r1-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r2-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 22.4 | r2-s2 | All | All |
| Operating System | Juniper | Junos Os Evolved | 23.2 | - | All | All |
| Operating System | Juniper | Junos Os Evolved | 23.2 | r1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 23.2 | r1-s1 | All | All |
| Operating System | Juniper | Junos Os Evolved | 23.2 | r1-s2 | All | All |
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Juniper Networks | Junos OS | affected 21.4 21.4R3-S6 semver | Not specified |
| CNA | Juniper Networks | Junos OS | affected 22.1 22.1R3-S6 semver | Not specified |
| CNA | Juniper Networks | Junos OS | affected 22.2 22.2R3-S3 semver | Not specified |
| CNA | Juniper Networks | Junos OS | affected 22.3 22.3R3-S3 semver | Not specified |
| CNA | Juniper Networks | Junos OS | affected 22.4 22.4R3 semver | Not specified |
| CNA | Juniper Networks | Junos OS | affected 23.2 23.2R2 semver | Not specified |
| CNA | Juniper Networks | Junos OS | unaffected 21.3R1 semver | Not specified |
| CNA | Juniper Networks | Junos OS Evolved | affected 22.3 22.3R3-S3-EVO semver | Not specified |
| CNA | Juniper Networks | Junos OS Evolved | affected 22.4 22.4R3-EVO semver | Not specified |
| CNA | Juniper Networks | Junos OS Evolved | affected 23.2 23.2R2-EVO semver | Not specified |
| CNA | Juniper Networks | Junos OS Evolved | unaffected 21.3R1-EVO semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| supportportal.juniper.net/JSA103151 | [email protected] | supportportal.juniper.net | Vendor Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
Additional Advisory Data
Solutions
CNA: The following software releases have been updated to resolve this specific issue: Junos OS 21.4R3-S6, 22.1R3-S6, 22.2R3-S3, 22.3R3-S3, 22.4R3, 23.2R2, 23.4R1, and all subsequent releases. Junos OS Evolved 22.3R3-S3-EVO, 22.4R3-EVO, 23.2R2-EVO, 23.4R1-EVO, and all subsequent releases.
Workarounds
CNA: Temporarily disabling BGP sharding will mitigate this issue.
Exploits
CNA: Juniper SIRT is not aware of any malicious exploitation of this vulnerability.
There are currently no legacy QID mappings associated with this CVE.