CVE-1999-1431

Zero Administration Kit vulnerability

CVSS

4.6

EPSS

9.7%

EPSS pct

95th

Exploited

No known

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.

Affected vendor

Microsoft

Affected product

Zero Administration Kit

CVSS vector

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

Published

2005-01-07

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to confidentiality, partial impact to integrity, partial impact to availability.

Its EPSS score of 9.7% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 95% of all scored CVEs.

Check your external exposure to CVE-1999-1431

Confirm whether Microsoft Zero Administration Kit is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-1999-1431.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-1999-1431

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-1999-1431 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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