Crash via unchecked saved peg color index
Published Sep 14, 2026 · Updated Sep 14, 2026
Buffer overflow in the Guess puzzle before 20230116.5782e29 allows context-dependent attackers to crash it via a crafted save file. decode_ui() accepts saved peg values without checking them against the configured color count, and is_markable() uses each positive value minus one as an index into the color-count buffer. Exploitation requires a victim to load the crafted save file; the Debian package registers no automatic save-file handler.
Summary
What happened
Buffer overflow in the Guess puzzle before 20230116.5782e29 allows context-dependent attackers to crash it via a crafted save file. decode_ui() accepts saved peg values without checking them against the configured color count, and is_markable() uses each positive value minus one as an index into the color-count buffer. Exploitation requires a victim to load the crafted save file; the Debian package registers no automatic save-file handler.
The record
- CVE
- CVE-2023-24284
- Published
- Sep 14, 2026
- Updated
- Sep 14, 2026
- Vendor
- Simon Tatham
- Product
- Simon Tatham's Portable Puzzle Collection
- Classifications
- T1203, T1204.002
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 14, 2026CVE publishedPublication date reported by the CVE source.
- Sep 14, 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=0 <20230116.5782e29
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
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Technologies
Your stack
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Your stack
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