CVE-2026-101990

Junos OS and Junos OS Evolved: A BGP peer causes an rpd crash when flow-spec routes are re-advertised

Published Oct 14, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Description
A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote configured BGP peer to cause an rpd crash, or on Junos OS remote code-execution, via sending a flow-spec update which is selected for re-advertisement.

Remediation

Vendor Solution

The following software releases have been updated to resolve this specific issue: Junos OS: 23.2R2-S7.7, 23.4R2-S8.13, 24.2R2-S5.5, 24.4R2-S5, 25.2R2-S2, 25.4R1-S3, 25.4R2, 26.2R1-S2, 26.2R2, 26.4R1, and all subsequent releases. Junos OS Evolved: 23.2R2-S7.7-EVO, 23.4R2-S8.11-EVO, 24.2R2-S5.6-EVO, 24.4R2-S5-EVO, 25.2R2-S2-EVO, 25.2X100-D35-EVO, 25.4R1-S3-EVO, 25.4R2-EVO, 25.4X300-D40-EVO, 26.2R1-S2-EVO, 26.2R2-EVO, 26.4R1-EVO, and all subsequent releases. Note: For Junos OS releases 23.2, 23.4, and 24.2, and Junos OS Evolved releases 23.2-EVO, 23.4-EVO, and 24.2-EVO, specific respins have been referenced. Previously published versions of these releases have been rebuilt to resolve the security vulnerabilities identified in this advisory.


Vendor Workaround

There are no known workarounds for this issue.

Tracking

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Advisories

No advisories available
History
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: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-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.2:r2-s7:*:*:*:*:*:*
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-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:23.4:r2-s8:*:*:*:*:*:*
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:24.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.2:r2:*:*:*:*:*:*
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-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:24.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:25.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:26.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:26.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos:26.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:*:*:*:*:*:*:*:*
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-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.2:r2-s7:*:*:*:*:*:*
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-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s6:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s7:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4:r2-s8:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:23.4x100:-:*:*:*:*:*:*
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:24.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.2:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.2:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.2:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.2:r2-s5:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.2:r2:*:*:*:*:*:*
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-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r2-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r2-s3:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r2-s4:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:24.4:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:r2-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2:r2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2x100:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2x100:d20:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2x100:d21:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2x100:d22:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.2x100:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4:r1-s1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4:r1-s2:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4:r1:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4x300:d10:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:25.4x300:d30:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:26.2:-:*:*:*:*:*:*
cpe:2.3:o:juniper:junos_os_evolved:26.2:r1:*:*:*:*:*:*
Vendors & Products Juniper
Juniper junos
Juniper junos Os Evolved
Type Values Removed Values Added
First Time appeared Juniper Networks
Juniper Networks junos Os
Juniper Networks junos Os Evolved
Vendors & Products Juniper Networks
Juniper Networks junos Os
Juniper Networks junos Os Evolved
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A Stack-based Buffer Overflow vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a remote configured BGP peer to cause an rpd crash, or on Junos OS remote code-execution, via sending a flow-spec update which is selected for re-advertisement.
Title Junos OS and Junos OS Evolved: A BGP peer causes an rpd crash when flow-spec routes are re-advertised
Weaknesses CWE-121
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
juniper
Published
Updated
Oct 16, 2026, 2:18 PM
Reserved
Sep 28, 2026, 4:31 PM
Status
Analyzed
Published
Oct 14, 2026, 5:17 PM
Modified
Oct 30, 2026, 6:42 PM