CVE-2025-67125

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).

CVSS v3 4.4 MEDIUM

4.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 2.5

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://gist.github.com/thesmartshadow/672afe8828844c833f46f8ebe2f5f3bd	Exploit Third Party Advisory
https://github.com/docopt/docopt.cpp	Product

Configurations

Configuration 1 (hide)

cpe:2.3:a:docopt:docopt.cpp:0.6.2:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-01-23 16:15

Updated : 2026-02-11 19:44

NVD link : CVE-2025-67125

Mitre link : CVE-2025-67125

CVE.ORG link : CVE-2025-67125

JSON object : View

Products Affected

docopt

docopt.cpp

CWE

CWE-190

Integer Overflow or Wraparound

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