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CVE-1999-0052

21
FAUCET Score

CVE-1999-0052 describes an IP fragmentation denial-of-service vulnerability affecting various BSD-based operating systems, including FreeBSD, BSD/OS, and OpenBSD. This flaw allows a remote, unauthenticated attacker to crash the system with low attack complexity, resulting in a high impact on availability. Despite its age and high CVSS score of 7.5, there is no evidence of active exploitation, publicly available exploit code in common databases like Metasploit or ExploitDB, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.0CPE matchmatch criteria
cpe:2.3:o:bsdi:bsd_os:4.0:*:*:*:*:*:*:*
1.1.5.1CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:1.1.5.1:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
2.1.0CPE matchmatch criteria
cpe:2.3:o:freebsd:freebsd:2.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

5.0MEDIUM

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
2.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.16%
Probability of exploitation in next 30 days
EPSS Percentile
80.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0216 is in the 65th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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/1389
osvdb.org / 908