Arbitrary code execution via ConnectToSynactis stack overwrite
Published Aug 1, 2025 · Updated Apr 7, 2026
Stack-based buffer overflow in Synactis PDF In-The-Box allows remote attackers to execute arbitrary code through a malicious webpage. The PDF_IN_1.ocx ConnectToSynactis method copies an overlong string into the ldCmdLine buffer with strcpy, overwriting a saved TRegistry pointer. Exploitation requires a user to load attacker-controlled HTML that instantiates the ActiveX control, and successful code runs with that user's privileges.
Summary
What happened
Stack-based buffer overflow in Synactis PDF In-The-Box allows remote attackers to execute arbitrary code through a malicious webpage. The PDF_IN_1.ocx ConnectToSynactis method copies an overlong string into the ldCmdLine buffer with strcpy, overwriting a saved TRegistry pointer. Exploitation requires a user to load attacker-controlled HTML that instantiates the ActiveX control, and successful code runs with that user's privileges.
The record
- CVE
- CVE-2013-10057
- Published
- Aug 1, 2025
- Updated
- Apr 7, 2026
- Vendor
- Synactis
- Product
- PDF In-The-Box
- Classifications
- CWE-121, CWE-94, CAPEC-100, CAPEC-242, T1189, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 1, 2025CVE publishedPublication date reported by the CVE source.
- Apr 7, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=*
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Logic Print 2013 vTable Overwrite Stack Overflowfunctional · demonstrated
- Synactis PDF In-The-Box ConnectToSynactic Stack Buffer Overflow Metasploit modulefunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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