Application crash via oversized registration input
Published Feb 11, 2026 · Updated Feb 11, 2026
Buffer overflow in Dialup Password Recovery 1.30 allows local users to crash the application through oversized registration input. The User Name and Registration Code fields accept a 5,000-character payload without enforcing the destination buffer's size. Exploitation requires interactive access to the Windows registration dialog; the demonstrated consequence is termination of the utility.
Summary
What happened
Buffer overflow in Dialup Password Recovery 1.30 allows local users to crash the application through oversized registration input. The User Name and Registration Code fields accept a 5,000-character payload without enforcing the destination buffer's size. Exploitation requires interactive access to the Windows registration dialog; the demonstrated consequence is termination of the utility.
The record
- CVE
- CVE-2020-37191
- Published
- Feb 11, 2026
- Updated
- Feb 11, 2026
- Vendor
- Top Password Software, Inc.
- Product
- Dialup Password Recovery
- Classifications
- CWE-120, T1499
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 11, 2026CVE publishedPublication date reported by the CVE source.
- Feb 11, 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=1.30
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
- Dialup Password Recovery 1.30 Denial of Service PoCproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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