CVE-2012-10043CWE-121

ActFax 4.32 Client Importer Buffer Overflow

Critical · published August 8, 2025

CVSS v4.0
9.3
EPSS
0%
Percentile
34.4
In the wild
Unconfirmed
What it is

A stack-based buffer overflow vulnerability exists in ActFax Server version 4.32, specifically in the "Import Users from File" functionality of the client interface. The application fails to properly validate the length of tab-delimited fields in .exp files, leading to unsafe usage of strcpy() during CSV parsing. An attacker can exploit this vulnerability by crafting a malicious .exp file and importing it using the default character set "ECMA-94 / Latin 1 (ISO 8859)". Successful exploitation may result in arbitrary code execution, leading to full system compromise. User interaction is required to trigger the vulnerability.

The record
Technical detail
CVSS v4.0
9.3 · CRITICAL
Vector
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00415 · 34.4th percentile
Weakness
CWE-121 · Stack-based Buffer Overflow
Published
2025-08-08T18:09Z
EPSS history
Timeline
  • 08 AUG 18:09Z
    ActFax 4.32 Client Importer Buffer Overflow
    cvelistv5