Vulnerability · Published Apr 27, 2026 · Assigned by jpcert
CVE-2026-33277
High 8.8
In plain English
A high-severity OS command injection in LogonTracer from Japan Computer Emergency Response Team Coordination Center (JPCERT/CC). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.3% (higher than 71% of all known vulnerabilities).
Severity (CVSS 3.0)8.8High
Exploit odds (30 days)1.3%top 28.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
An OS command Injection issue exists in LogonTracer prior to v2.0.0. An arbitrary OS command may be executed by a logged-in user.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Japan Computer Emergency Response Team Coordination Center (JPCERT/CC) | LogonTracer | prior to v2.0.0 |
Weakness: CWE-78 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H