Executive Summary

Info‑ZIP Zip 3.0 suffers an off‑by‑one error when the -T and -TT options are used. The bug can trigger an invalid free that crashes the application, leading to a denial‑of‑service. While -TT can execute arbitrary commands, it is uncertain whether an attacker can supply a malicious value in realistic scenarios. No KEV listing yet.

---

Authoritative CVE Metadata - CVSS Base Score: 9.8 (CRITICAL) - Published: 2018-07-06T19:29:00.373 - Last Modified: 2026-09-18T11:17:06.010

Original Description: Info-ZIP Zip 3.0, when the -T and -TT command-line options are used, allows attackers to cause a denial of service (invalid free and application crash) or possibly have unspecified other impact because of an off-by-one error. NOTE: it is unclear whether there are realistic scenarios in which an untrusted party controls the -TT value, given that the entire purpose of -TT is execution of arbitrary commands

"Don't ruin the present with the ruined past."

— Ellen Gilchrist