What’s Vulnerable › Vulnerabilities

CVE-2025-67125

• Severity: medium (CVSS 4.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-01-23 · updated 2026-06-17
• Weakness: CWE-190

Description

A signed integer overflow in docopt.cpp v0.6.2 (LeafPattern::match in docopt_private.h) when merging occurrence counters (e.g., default LONG_MAX + first user "-v/--verbose") can cause counter wrap (negative/unbounded semantics) and lead to logic/policy bypass in applications that rely on occurrence-based limits, rate-gating, or safety toggles. In hardened builds (e.g., UBSan or -ftrapv), the overflow may also result in process abort (DoS).

Affected products

• Docopt.Cpp: 0.6.2

References

• https://gist.github.com/thesmartshadow/672afe8828844c833f46f8ebe2f5f3bd
• https://github.com/docopt/docopt.cpp

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