Which products and versions are affected by CVE-1999-0153?

Affected: Windows 2000 (Microsoft); Windows 95 (Microsoft); Windows Nt (Microsoft), among others. The full list is in the CVE brief.

Is CVE-1999-0153 being exploited in the wild?

It is not listed in any known-exploited vulnerabilities catalog.

Is CVE-1999-0153 in the CISA KEV catalog?

No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.

Is there a public exploit for CVE-1999-0153?

Public exploit code is available.

Is there a fix for CVE-1999-0153?

No fixed version is listed yet; check the vendor advisory for mitigations.

How urgently should CVE-1999-0153 be patched?

Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Request A Demo

WatchlistMedium

CVE-1999-0153Windows 95 Vulnerability

Windows 95/NT out of band (OOB) data denial of service through NETBIOS port, aka WinNuke.

Published Jul 1, 1997 · Updated Apr 15, 2026

Key Facts

Routine patching

CVE-1999-0153 is a medium-severity vulnerability (CVSS 5.0 v2) affecting Windows 2000 (Microsoft), Windows 95 (Microsoft), Windows Nt (Microsoft) and 1 more product.
It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
EPSS estimates a 21% probability of exploitation in the next 30 days.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Scores

CVSS v2

5.0

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

EPSS (30-day exploit likelihood)

21%

Higher than 97.5% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

36/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

Proof-of-concept links

In-the-wild evidence

Reports of active use

Description

Windows 95/NT out of band (OOB) data denial of service through NETBIOS port, aka WinNuke.

Affected Products

4 affected entries in total

Product	Affected versions	Fixed in
Windows 2000Microsoft	See advisory	n/a
Windows 95Microsoft	See advisory	n/a
Windows NtMicrosoft	See advisory	n/a
OpenserverSco	5.0	n/a

Timeline

Publicly disclosed
Jul 1, 1997
Last updated
Apr 15, 2026

References

FAQ

Common Questions.

Windows 95/NT out of band (OOB) data denial of service through NETBIOS port, aka WinNuke.
Affected: Windows 2000 (Microsoft); Windows 95 (Microsoft); Windows Nt (Microsoft), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: routine patching, as no exploitation is known and its severity is moderate or low.

Is CVE-1999-0153 On Your Attack Surface?

Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.