Is CVE-1999-1405 actively exploited?

A proof-of-concept exploit is publicly available for CVE-1999-1405, but active exploitation has not been confirmed.

Can CVE-1999-1405 be exploited remotely?

Yes. CVE-1999-1405 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-1999-1405?

CVE-1999-1405 has a CVSS score of 10.0 (CRITICAL).

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CRITICALPOC

CVE-1999-1405

NVD-CWE-OtherPublished: February 17, 1999· Updated: Jun 16, 2026

10.0

CVSS v3.1

Official Description

snap command in AIX before 4.3.2 creates the /tmp/ibmsupt directory with world-readable permissions and does not remove or clear the directory when snap -a is executed, which could allow local users to access the shadowed password file by creating /tmp/ibmsupt/general/passwd before root runs snap -a.

NVD Source

Technical Analysis

CVE-1999-1405 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A proof-of-concept (PoC) exploit exists for CVE-1999-1405. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.