Code execution via oversized LSM ObjCaption
Published Apr 4, 2026 · Updated Apr 4, 2026
Out-of-bounds write in 10-Strike Software LANState 8.8 allows local users to execute arbitrary code through a crafted LSM map file. The LSM parser accepts an oversized ObjCaption value, overwriting adjacent stack data and the structured exception handler chain to redirect execution to embedded shellcode. Exploitation requires the malicious map to be opened in the Windows application, and successful code runs in that user's context.
Summary
What happened
Out-of-bounds write in 10-Strike Software LANState 8.8 allows local users to execute arbitrary code through a crafted LSM map file. The LSM parser accepts an oversized ObjCaption value, overwriting adjacent stack data and the structured exception handler chain to redirect execution to embedded shellcode. Exploitation requires the malicious map to be opened in the Windows application, and successful code runs in that user's context.
The record
- CVE
- CVE-2018-25255
- Published
- Apr 4, 2026
- Updated
- Apr 4, 2026
- Vendor
- 10-Strike Software
- Product
- LANState
- Classifications
- CWE-787, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 4, 2026CVE publishedPublication date reported by the CVE source.
- Apr 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=8.8
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
- 10-Strike LANState 8.8 - Local Buffer Overflow (SEH)functional · demonstrated
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Technologies
Your stack
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Your stack
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