Riskcovery

CVE-2026-102087

Junos OS and Junos OS Evolved: If in a traffic engineering scenario a specific valid BGP-LS attribute is received rpd crashes

State
Published
Severity
7.1 High
Published
Oct 14, 2026
Updated
Oct 14, 2026
Reserved
Sep 28, 2026

Read the record on cve.org

Description

An Incomplete List of Disallowed Inputs vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker to cause a Denial-of-Service (DoS).

When in a BGP traffic engineering scenario a specific, valid, optional, non-transitive BGP update is received over an established BGP session, RPD crashes and automatically restarts, which leads to traffic impact until routing has reconverged.

This issue affects: Junos OS:

* All versions before 23.2R2-S6; * 23.4 versions before 23.4R2-S7; * 24.2 versions before 24.2R2-S4; * 24.4 versions before 24.4R2-S4; * 25.2 versions before 25.2R1-S2, 25.2R2;

Junos OS Evolved: * All versions before 23.2R2-S6-EVO; * 23.4 versions before 23.4R2-S8.11-EVO; * 24.2 versions before 24.2R2-S4-EVO; * 24.4 versions before 24.4R2-S5-EVO; * 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO;

Scores

CVSSScoreVectorSource
4.07.1 HighCVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:Mjuniper
3.16.5 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hjuniper

Weaknesses

Affected Products

ProductVersions
Junos OSJuniper Networks
  • before 23.2R2-S6Affected
  • 23.4 to before 23.4R2-S7Affected
  • 24.2 to before 24.2R2-S4Affected
  • 24.4 to before 24.4R2-S4Affected
  • 25.2 to before 25.2R1-S2, 25.2R2Affected
Junos OS EvolvedJuniper Networks
  • before 23.2R2-S6-EVOAffected
  • 23.4 to before 23.4R2-S8.11-EVOAffected
  • 24.2 to before 24.2R2-S4-EVOAffected
  • 24.4 to before 24.4R2-S5-EVOAffected
  • 25.2 to before 25.2R1-S2-EVO, 25.2R2-EVOAffected

References

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