CVE-1999-0052

IP fragmentation denial of service in FreeBSD allows a remote attacker to cause a crash.

Published: 1998-11-04 Last update: 2026-04-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-1999-0052 is rated Moderate Risk (51.5/100): CVSS High severity, with medium exploitation likelihood (EPSS 1.07%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-1999-0052

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2025-03-30 8.87% 1.07% -7.80%
2 2025-03-29 1.07% 8.87% +7.80%
3 2025-03-17 — 1.07% —

Full EPSS history (6 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-1999-0052

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-1999-0052

OS Trackers for CVE-1999-0052

vendor priority summary link
alpine — CVE-1999-0052: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-1999-0052

Affected software / configurations for CVE-1999-0052

Vendor Product Version Raw CPE
bsdi bsd_os 4.0 cpe:2.3:o:bsdi:bsd_os:4.0:*:*:*:*:*:*:*
freebsd freebsd 1.1.5.1 cpe:2.3:o:freebsd:freebsd:1.1.5.1:*:*:*:*:*:*:*
freebsd freebsd 2.0 cpe:2.3:o:freebsd:freebsd:2.0:*:*:*:*:*:*:*
freebsd freebsd 2.0.5 cpe:2.3:o:freebsd:freebsd:2.0.5:*:*:*:*:*:*:*
freebsd freebsd 2.1.0 cpe:2.3:o:freebsd:freebsd:2.1.0:*:*:*:*:*:*:*
freebsd freebsd 2.1.5 cpe:2.3:o:freebsd:freebsd:2.1.5:*:*:*:*:*:*:*
freebsd freebsd 2.1.6 cpe:2.3:o:freebsd:freebsd:2.1.6:*:*:*:*:*:*:*
freebsd freebsd 2.1.7.1 cpe:2.3:o:freebsd:freebsd:2.1.7.1:*:*:*:*:*:*:*
freebsd freebsd 2.2.2 cpe:2.3:o:freebsd:freebsd:2.2.2:*:*:*:*:*:*:*
freebsd freebsd 2.2.8 cpe:2.3:o:freebsd:freebsd:2.2.8:*:*:*:*:*:*:*
openbsd openbsd 2.2 cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*
openbsd openbsd 2.3 cpe:2.3:o:openbsd:openbsd:2.3:*:*:*:*:*:*:*
openbsd openbsd 2.4 cpe:2.3:o:openbsd:openbsd:2.4:*:*:*:*:*:*:*

References for CVE-1999-0052

cvelogic Threat Intelligence