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CVE-2000-0998

29
FAUCET Score

CVE-2000-0998 describes a format string vulnerability in the 'top' program, specifically affecting FreeBSD versions 3.5 and 4.x, and Debian systems. This flaw allows local attackers to gain root privileges by exploiting the "kill" or "renice" functions. With a CVSS score of 7.2 (HIGH), it presents a significant risk due to its low attack complexity and complete compromise of confidentiality, integrity, and availability. While not currently on the CISA KEV list or Hot List, exploit code is publicly available on ExploitDB, though there is no evidence of active exploitation, Metasploit modules, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
3.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5:*:*:*:*:*:*:*
3.5CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5:stable:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5.1:*:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5.1:release:*:*:*:*:*:*
3.5.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:3.5.1:stable:*:*:*:*:*:*

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
0.88%
Probability of exploitation in next 30 days
EPSS Percentile
55.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-20378 · Dec 12, 2004
This CVE's current EPSS score of 0.0088 is in the 75th percentile among its peer group of 3,237 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

ftp.freebsd.org / pub/FreeBSD/CERT/advisories/FreeBSD-SA-00:62.top.v1.1.asc
PatchVendor Advisory
ftp.openbsd.org / pub/OpenBSD/patches/2.7/common/028_format_strings.patch
securityfocus.com / bid/1895
PatchVendor Advisory