Process crash via unchecked modulo divisor
Published Mar 1, 2026 · Updated Mar 1, 2026
Divide by zero in ChaiScript 6.0 and 6.1.0 allows local users to crash a host process by evaluating a crafted script. Boxed_Number::go handles the assign_remainder operation without checking whether the right-hand integer operand is zero, so %= invokes a hardware SIGFPE. Exploitation requires a host application to evaluate attacker-controlled ChaiScript, and the resulting signal terminates that process.
Summary
What happened
Divide by zero in ChaiScript 6.0 and 6.1.0 allows local users to crash a host process by evaluating a crafted script. Boxed_Number::go handles the assign_remainder operation without checking whether the right-hand integer operand is zero, so %= invokes a hardware SIGFPE. Exploitation requires a host application to evaluate attacker-controlled ChaiScript, and the resulting signal terminates that process.
The record
- CVE
- CVE-2026-3383
- Published
- Mar 1, 2026
- Updated
- Mar 1, 2026
- Vendor
- ChaiScript
- Product
- ChaiScript
- Classifications
- CWE-404, CWE-369, T1499.004
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 1, 2026CVE publishedPublication date reported by the CVE source.
- Mar 1, 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=6.0
- Affected versionversion=6.1.0
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
- Modulo-by-zero crash proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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