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CVE-1999-0023

29
FAUCET Score

CVE-1999-0023 is a buffer overflow vulnerability located in the lookup() function of the rdist utility, impacting multiple legacy UNIX-based operating systems including FreeBSD, IBM AIX, and SunOS. With a CVSS score of 7.2, this high-severity flaw allows a local user to gain root privileges with low attack complexity, resulting in complete loss of system confidentiality, integrity, and availability. While historical proof-of-concept code is available on ExploitDB, there are no current indicators of active exploitation, CISA KEV listing, or significant community discussion regarding this inactive threat.

Impacted Technologies

VendorProductVersion(s)CPE
5.01CPE matchmatch criteria
cpe:2.3:a:inet:inet:5.01:*:*:*:*:*:*:*
6.01CPE matchmatch criteria
cpe:2.3:a:inet:inet:6.01:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:*:*:*:*:*:*:*:*
2.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:2.0:*:*:*:*:*:*:*
2.0.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:2.0.5:*:*:*:*:*:*:*

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
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
ExploitDB: EDB-19106 · Jul 3, 1996
This CVE's current EPSS score of 0.0077 is in the 72nd percentile among its peer group of 3,236 CVEs.

Social Chatter

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

exchange.xforce.ibmcloud.com / vulnerabilities/CVE-1999-0023