CVE-2026-84832CWE-502CWE-78command-injectioninsecure-deserialization

CVE-2026-84832

published September 3, 2026

CVSS
8.6
EPSS
1%
Percentile
49.9
In the wild
Unconfirmed
What it is

SEPPmail Secure Email Gateway before 15.0.6 deserializes attacker-controlled data in a privileged REST import workflow without adequate validation. An attacker with a privileged API token can execute arbitrary commands with "nobody" privileges.

The record
Technical detail
CVSS
8.6 · NONE
CVSS v4.0
8.6 · CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00637 · 49.9th percentile
Weaknesses
CWE-502 · Deserialization of Untrusted Data; CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Published
2026-09-03T17:06Z
References (1)
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html · [email protected]
EPSS history
Timeline
  • 04 SEP 03:44Z
    EPSS moved — → 1%
    epss
  • 03 SEP 08:45Z
    Unsafe deserialization in the REST interface
    cvelistv5