CVE-1999-0798

CRITICAL

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

Affects 7 products across 5 vendors.

CVSS 2.010.0
EPSS1.6%
Percentile76th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 1998. A critical vulnerability affects Bsdi systems (CVE-1999-0798). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-1998-GLOBAL-308071-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-1999-0798?
This vulnerability was disclosed in 1998. A critical vulnerability affects Bsdi systems (CVE-1999-0798). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-1999-0798?
CVE-1999-0798 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 1.6%.
Is CVE-1999-0798 actively exploited?
No confirmed active exploitation of CVE-1999-0798 as of 2026-06-20.
How do I remediate CVE-1999-0798?
Priority: MEDIUM.
What systems are affected by CVE-1999-0798?
CVE-1999-0798 affects Bsdi Bsd Os; Freebsd Freebsd; Openbsd Openbsd; Redhat Linux; Sco Internet Faststart, Openserver, Unixware.
Vulnerability Details
CVE IDCVE-1999-0798
BSIDBS-1998-GLOBAL-308071-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published1998-12-04
Last Modified2026-06-16
ICS Relevance0%
SourceNVD
Official Description

Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Bsdi Bsd Os All versions
Freebsd Freebsd 6.2
Openbsd Openbsd 2.3 2.4
Redhat Linux All versions
Sco Internet Faststart All versions
Sco Openserver All versions
Sco Unixware 7.0 7.0.1
Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 10185 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash41097f7a3251549a346ad7f78b8273f46d0bc1c73e92b663b77404a3662d7c14b6f0dae75984c0c923d5f89c9c781de9e5cffdb649c344ae9629eca7d8723652
Related CVEs affecting Bsdi
CVE-1999-0165 10.0 NFS cache poisoning. CVE-1999-0046 10.0 Buffer overflow of rlogin program using TERM environmental variable. CVE-1999-0099 10.0 Buffer overflow in syslog utility allows local or remote attackers to gain ro... CVE-1999-0047 10.0 MIME conversion buffer overflow in sendmail versions 8.8.3 and 8.8.4. CVE-1999-0042 10.0 Buffer overflow in University of Washington's implementation of IMAP and POP servers.
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