CVE-1999-0994 json
Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.
published 1999-12-16 26 y ago modified 2026-06-16 4 mo ago also EUVD-1999-0975
- cvss
- 5.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 7.1%
- EPSS 7.1% chance of exploitation in 30 days, percentile 94%
- public exploits
- 0
- none known
Summary
Windows NT with SYSKEY reuses the keystream that is used for encrypting SAM password hashes, allowing an attacker to crack passwords.
Exploit prediction
7.14% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-255 Credentials Management Errors
References
-
support.microsoft.com
/default.aspx?scid=kb%3B%5BLN%5D%3BQ248183
vendor-advisory
-
docs.microsoft.com
/en-us/security-updates/securitybulletins/1999/ms99-056
vendor-advisory
-
securityfocus.com
/bid/873
vdb-entry
Sources
- CVE List CVE-1999-0994
- NVD CVE-1999-0994
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