CVE-2026-102177CWE-787

CVE-2026-102177

High · published October 14, 2026

CVSS v3.1
7.6
EPSS
0%
Percentile
18.3
In the wild
Unconfirmed
What it is

An Out-of-bounds Write vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a denial of service when IS-IS link protection and backup-selection are configured.

The record
Technical detail
CVSS v3.1
7.6 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
CVSS v4.0
7.2 · CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
EPSS
0.00270 · 18.3th percentile
Weakness
CWE-787 · Out-of-bounds Write
Published
2026-10-14T21:18Z
References (1)
https://supportportal.juniper.net/JSA112187 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 14 OCT 16:56Z
    Junos OS and Junos OS Evolved: An out-of-bounds write causes an rpd crash when IS-IS backup selection is used
    cvelistv5
  • 14 OCT 16:56Z
    Junos OS and Junos OS Evolved: An out-of-bounds write causes an rpd crash when IS-IS backup selection is used
    cvelistv5