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CVE-1999-1431

MediumPublished

ZAK in Appstation mode allows users to bypass the "Run only allowed apps" policy by starting Explorer from Office 97 applications (such as Word), installing...

Published: Sep 12, 2001
Updated: Aug 1, 2024
Assigning CNA: mitre
Evidence observed: Jan 7, 1999

Primary CVSS

4.6/ 10Medium

nvd · CVSS 2.0

AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS probability estimate

9.7%

Low · next 30 days

Percentile: 95.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

ZAK in Appstation mode allows users to bypass the "Run only allowed apps" policy by starting Explorer from Office 97 applications (such as Word), installing software into the TEMP directory, and changing the name to that for an allowed application, such as Winword.exe.

Sources

Microsoft Zero Administration Kit (ZAK) 1.0 / Office97 - Backdoor AccessExploit
Satu Laksela · windows · Jan 7, 1999

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