CVE-2026-33798CWE-121

CVE-2026-33798

High · published October 14, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
27.5
In the wild
Unconfirmed
What it is

A Stack-based Buffer Overflow vulnerability in the srxpfe of Juniper Networks Junos OS and Junos OS Evolved on the SRX Series allows an L2-adjacent attacker to execute arbitrary code as root via high-availability fabric traffic.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M
EPSS
0.00351 · 27.5th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-14T21:18Z
References (1)
https://supportportal.juniper.net/JSA112186 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 14 OCT 16:59Z
    Junos OS and Junos OS Evolved: SRX Series: An attacker causes remote code execution when SRX chassis-cluster is enabled
    cvelistv5
  • 14 OCT 16:59Z
    Junos OS and Junos OS Evolved: SRX Series: An attacker causes remote code execution when SRX chassis-cluster is enabled
    cvelistv5