CVE-1999-0994
published 1999-12-16CVE-1999-0994: Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.
PriorityP422medium5CVSS 2.0
AVNACLAuNCPINAN
EPSS
7.19%
93.6th percentile
Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| microsoft | windows_nt | — | — |
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
VulDB
Microsoft Windows NT 4.0 Keystream credentials management (MS99-056 / XFDB-3950)
vuldb·2026-04-19·CVSS 5.0
CVE-1999-0994 [MEDIUM] Microsoft Windows NT 4.0 Keystream credentials management (MS99-056 / XFDB-3950)
A vulnerability classified as critical was found in Microsoft Windows NT 4.0. Impacted is an unknown function of the component Keystream Handler. Executing a manipulation can lead to credentials management.
The identification of this vulnerability is CVE-1999-0994. The attack may be launched remotely. Furthermore, there is an exploit available. This vulnerability has a historic impact due to its background and reception.
Upgrading the affected component is advised.
GHSA
GHSA-r7rj-gr4g-8x94: Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords
ghsa_unreviewed·2022-04-30
CVE-1999-0994 [MEDIUM] GHSA-r7rj-gr4g-8x94: Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords
Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183http://www.securityfocus.com/bid/873https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-056http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183http://www.securityfocus.com/bid/873https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-056
1999-12-16
Published