CVE-2026-103993

medium

Description

An Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent attacker which sends a specific set of BGP communities to cause a Denial-of-Service (DoS) as rpd crashes when graceful-shutdown sender community is added when attempting to advertise.

References

https://supportportal.juniper.net/JSA112187

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-101453

Details

Source: Mitre, NVD

Published: 2026-10-14

Updated: 2026-10-15

Risk Information

CVSS v2

Base Score: 5.5

Vector: CVSS2#AV:A/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 6.8

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 6.9

Vector: CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L

Severity: Medium

EPSS

EPSS: 0.00243