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Fencer Vulns
medium 4.6

CVE-1999-1431 json

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

published 2001-09-12 25 y ago modified 2026-06-16 4 mo ago also EUVD-1999-1412

cvss
4.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.7%
EPSS 9.7% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

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.

Timeline

  1. First public exploit (EDB-19144)
  2. Published

Exploit prediction

9.65% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-19144 Microsoft Zero Administration Kit (ZAK) 1.0 / Office97 - Backdoor Access local, 1999-01-07
  • securityfocus.com http://www.securityfocus.com/bid/181 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.