CVE-2012-10043

CRITICAL EPSS 24.4%
Published Aug 8, 202510mo ago · Modified Jun 16, 20261w ago
9.3 CVSS 4.0
Critical
Find Similar
Published Aug 8, 2025 10mo ago
Last Modified Jun 16, 2026 1w ago

Description

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.

CVSS Details

Base Score
9.3
Exploitability
—
Impact
—
Vector string
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
24.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-121

References 5

  • raw.githubusercontent.com https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/fileformat/actfax_import_users_bof.rb
  • web.archive.org https://web.archive.org/web/20130712072809/http://www.pwnag3.com/2012/08/actfax-local-privilege-escalation.html
  • actfax.com https://www.actfax.com/
  • exploit-db.com https://www.exploit-db.com/exploits/20915
  • vulncheck.com https://www.vulncheck.com/advisories/actfax-client-importer-buffer-overflow

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.