Memory corruption via crafted PDF stack overflow
Published May 17, 2026 · Updated May 17, 2026
Stack-based buffer overflow in Investintech Slim PDF Reader 2.0.0 through 2.0.13 allows remote attackers to corrupt memory via a crafted PDF. The sub_3B4610 function in SlimPDFReader.exe writes attacker-controlled PDF data beyond a stack buffer, corrupting adjacent memory. Exploitation requires a user to open the file and can expose data, alter data, or crash the reader; all affected releases are unsupported.
Summary
What happened
Stack-based buffer overflow in Investintech Slim PDF Reader 2.0.0 through 2.0.13 allows remote attackers to corrupt memory via a crafted PDF. The sub_3B4610 function in SlimPDFReader.exe writes attacker-controlled PDF data beyond a stack buffer, corrupting adjacent memory. Exploitation requires a user to open the file and can expose data, alter data, or crash the reader; all affected releases are unsupported.
The record
- CVE
- CVE-2026-8733
- Published
- May 17, 2026
- Updated
- May 17, 2026
- Vendor
- Investintech
- Product
- Slim PDF Reader
- Classifications
- CWE-119, CWE-121, T1203, T1204.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 17, 2026CVE publishedPublication date reported by the CVE source.
- May 17, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.0
- Affected versionversion=2.0.1
- Affected versionversion=2.0.10
- Affected versionversion=2.0.11
- Affected versionversion=2.0.12
- Affected versionversion=2.0.13
- Affected versionversion=2.0.2
- Affected versionversion=2.0.3
- Affected versionversion=2.0.4
- Affected versionversion=2.0.5
- Affected versionversion=2.0.6
- Affected versionversion=2.0.7
- Affected versionversion=2.0.8
- Affected versionversion=2.0.9
What conditions does exploitation require?
What is affected?
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
- SlimPDFReader stack overflow proof of conceptproof of concept · unverified
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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