Buffer overflow in Windows NT 4.0 help file utility via a malformed help file.

published 1999-05-17 27 y ago modified 2026-06-16 4 mo ago also EUVD-1999-0697

cvss: 4.6; version 2.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.1%; EPSS 3.1% chance of exploitation in 30 days, percentile 87%
public exploits: 1; Exploit-DB

Timeline

1999-05-17 First public exploit (EDB-19209)
1999-05-17 Published

Exploit prediction

3.12% chance of exploitation in the next 30 days, higher than 87% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

EDB-19209 Microsoft Windows NT 4.0/4.0 SP1/4.0 SP2/4.0 SP3/4.0 SP4/4.0 SP5 - Help File Buffer Overflow local, 1999-05-17

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

docs.microsoft.com /en-us/security-updates/securitybulletins/1999/ms99-015
vendor-advisory
support.microsoft.com /default.aspx?scid=kb%3B%5BLN%5D%3BQ231605
vendor-advisory

Sources

CVE List CVE-1999-0716
NVD CVE-1999-0716

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.

Summary