What’s Vulnerable › Vulnerabilities

CVE-2013-10064: ActFax 5.01 RAW Server Buffer Overflow

• Severity: critical (CVSS 9.3 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-05 · updated 2026-06-16
• Weakness: CWE-121

Description

A stack-based buffer overflow vulnerability exists in ActFax Server version 5.01. The server's RAW protocol interface fails to safely process user-supplied data in @F506 fax header fields due to insecure usage of strcpy. Remote attackers can exploit this vulnerability by sending specially crafted @F506 fields, potentially leading to arbitrary code execution. Successful exploitation requires network access to TCP port 4559 and does not require authentication.

Affected products

• ActFax Communication ActFax Server: 5.01

References

• http://www.actfax.com/
• https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/misc/actfax_raw_server_bof.rb
• https://web.archive.org/web/20130212065755/http://www.pwnag3.com/2013/02/actfax-raw-server-exploit.html
• https://www.exploit-db.com/exploits/24467
• https://www.vulncheck.com/advisories/actfax-raw-server-buffer-overflow

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