CVE-2026-101955CWE-121

CVE-2026-101955

High · published October 14, 2026

CVSS v3.1
8.1
EPSS
1%
Percentile
46.3
In the wild
Unconfirmed
What it is

A Stack-based Buffer Overflow vulnerability in the UTM Anti-Spam SBL of Juniper Networks Junos OS on SRX series allows an unauthenticated remote attacker to cause arbitrary code execution or a denial of service via a injected malformed DNS packet when Anti-Spam SBL inspection is enabled.

The record
Technical detail
CVSS v3.1
8.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
9.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:L
EPSS
0.00566 · 46.3th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-14T21:17Z
References (1)
https://supportportal.juniper.net/JSA112186 · [email protected]
EPSS history
Timeline
  • 16 OCT 03:27Z
    EPSS moved — → 1%
    epss
  • 14 OCT 16:28Z
    Junos OS: SRX Series: Malformed DNS packet causes service disruption when UTM Anti-Spam SBL is used
    cvelistv5
  • 14 OCT 16:28Z
    Junos OS: SRX Series: Malformed DNS packet causes service disruption when UTM Anti-Spam SBL is used
    cvelistv5