CVE-2026-101983CWE-121

CVE-2026-101983

Critical · published October 14, 2026

CVSS v3.1
9.8
EPSS
1%
Percentile
44.6
In the wild
Unconfirmed
What it is

A Stack-based Buffer Overflow vulnerability in the httpd process of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated network attacker to cause remote code execution and denial of service via a J-Web virtual-domain configured.

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.3 · 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
EPSS
0.00540 · 44.6th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-14T22:17Z
References (1)
https://supportportal.juniper.net/JSA112187 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 14 OCT 17:17Z
    Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured
    cvelistv5
  • 14 OCT 17:17Z
    Junos OS and Junos OS Evolved: An attacker causes remote code execution when J-Web virtual-domain is configured
    cvelistv5