Local code execution via SEH pointer overwrite
Published Jun 4, 2026 · Updated Jun 4, 2026
A structured exception handler buffer overflow in Nsasoft NetShareWatcher 1.5.8.0 allows local users to execute arbitrary code. The Restrictions custom filter accepts an oversized payload and overwrites the SEH and NSEH pointers when the Find function processes it. The attacker must enter the payload locally and invoke Find; successful exploitation runs code with the privileges of the NetShareWatcher process.
Summary
What happened
A structured exception handler buffer overflow in Nsasoft NetShareWatcher 1.5.8.0 allows local users to execute arbitrary code. The Restrictions custom filter accepts an oversized payload and overwrites the SEH and NSEH pointers when the Find function processes it. The attacker must enter the payload locally and invoke Find; successful exploitation runs code with the privileges of the NetShareWatcher process.
The record
- CVE
- CVE-2019-25733
- Published
- Jun 4, 2026
- Updated
- Jun 4, 2026
- Vendor
- Nsasoft
- Product
- NetShareWatcher
- Classifications
- CWE-120, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 4, 2026CVE publishedPublication date reported by the CVE source.
- Jun 4, 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=1.5.8.0
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
- NetShareWatcher 1.5.8.0 SEH buffer overflowproof of concept · unverified
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Technologies
Your stack
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Your stack
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