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CVE-2001-1122

22
FAUCET Score

CVE-2001-1122 describes a denial-of-service vulnerability affecting Microsoft Windows NT 4.0 SP 6a. A local user with write access to the system32 directory can crash the lsass.exe process by executing the NT4ALL exploit program in 'SPECIAL' mode. This vulnerability has a CVSS score of 2.1 (LOW), indicating a local attack vector with low complexity, resulting in partial availability impact. While not listed on the KEV catalog, an exploit (EDB-21047) is publicly available, and the CVE has garnered significant community discussion, though no active exploitation or media coverage is reported.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:sp1:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:sp2:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:sp3:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:microsoft:windows_nt:4.0:sp4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

2.1LOW

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
3.74%
Probability of exploitation in next 30 days
EPSS Percentile
88.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-21047 · Aug 3, 2001
This CVE's current EPSS score of 0.0374 is in the 99th percentile among its peer group of 2,096 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.6 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

exchange.xforce.ibmcloud.com / vulnerabilities/6943
securityfocus.com / archive/1/201722
ExploitPatchVendor Advisory
securityfocus.com / bid/3144
ExploitVendor Advisory