CVE-2026-43856CWE-121

CVE-2026-43856

published October 20, 2026

CVSS
8.6
EPSS
1%
Percentile
53.1
In the wild
Unconfirmed
What it is

A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code execution via a path longer than 1024 bytes.

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
0.00712 · 53.1th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2026-10-20T14:17Z
References (2)
https://www.advantech.com/en/security-advisory · 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4https://www.csa.gov.sg/alerts-and-advisories/alerts/al-2026-149 · 5f57b9bf-260d-4433-bf07-b6a79e9bb7d4
EPSS history
Timeline
  • 21 OCT 03:29Z
    EPSS moved — → 1%
    epss
  • 20 OCT 09:16Z
    A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code…
    cvelistv5
  • 20 OCT 09:16Z
    A stack-based buffer overflow vulnerability in the FileProcess::CheckDir function could allow a remote authenticated attacker to achieve arbitrary code…
    cvelistv5