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CVE-2000-0993

27
FAUCET Score

CVE-2000-0993 describes a format string vulnerability in the pw_error function of the BSD libutil library, impacting FreeBSD, NetBSD, and OpenBSD systems. This flaw allows local users to achieve root privileges by supplying a malformed password to commands like chpass or passwd. With a CVSS score of 7.2 (HIGH), it presents a critical risk due to its low attack complexity and complete compromise of confidentiality, integrity, and availability. While not listed on the KEV catalog or Hot List, an exploit is publicly available on ExploitDB, though there is no evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
3.2CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.2:*:*:*:*:*:*:*
3.3CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.3:*:*:*:*:*:*:*
3.4CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.4:*:*:*:*:*:*:*
3.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:4.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
1.67%
Probability of exploitation in next 30 days
EPSS Percentile
74.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-243 · Jan 12, 2001
This CVE's current EPSS score of 0.0167 is in the 90th percentile among its peer group of 3,237 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

ftp.freebsd.org / pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:58.chpass.asc
ftp.netbsd.org / pub/NetBSD/misc/security/advisories/NetBSD-SA2000-015.txt.asc
marc.info
exchange.xforce.ibmcloud.com / vulnerabilities/5339
openbsd.org / errata27.html
securityfocus.com / bid/1744
ExploitPatchVendor Advisory