CVE-2026-101960: CWE-787 Out-of-bounds Write in Juniper Networks Junos OS Evolved
Description
An Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved on QFX5240, QFX5241 and QFX5250 configured for BGP global-load-balancing and more than 128 ecmp next-hops allows an attacker to cause an rpd crash.
CVSS v3.1
Score 6.5medium
Affected software
Juniper Networks
Junos OS Evolved
pkg:github/juniper-networks/junos-os-evolvedRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
An out-of-bounds write vulnerability (CWE-787) exists in the routing protocol daemon (rpd) of Juniper Networks Junos OS Evolved on QFX5240, QFX5241, and QFX5250 platforms. The flaw is triggered when BGP global-load-balancing is configured with more than 128 ECMP next-hops, which can cause the rpd process to crash. This denial-of-service condition impacts system availability but does not affect confidentiality or integrity. The vulnerability affects multiple versions of Junos OS Evolved as specified, with no explicit patch or remediation details provided in the input data. There are no known exploits in the wild at this time.
Potential Impact
The vulnerability allows an unauthenticated attacker with network access to cause a denial-of-service by crashing the routing protocol daemon (rpd) on affected Junos OS Evolved devices configured with BGP global-load-balancing and more than 128 ECMP next-hops. This results in loss of routing functionality and network disruption. There is no impact on confidentiality or integrity according to the CVSS vector.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a patch is available, avoid configurations that enable BGP global-load-balancing with more than 128 ECMP next-hops on affected devices to mitigate the risk of rpd crashes.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- juniper
- Date Reserved
- 2026-09-28T16:28:35.625Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6acfaf302cdf04f65694d32b
Added to database: 10/14/2026, 16:34:56 UTC
Last enriched: 10/14/2026, 18:49:22 UTC
Last updated: 10/15/2026, 01:08:19 UTC
Views: 9
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