How severe is CVE-1999-0304?

CVE-1999-0304 has a CVSS 2.0 base score of 7.2, rated high severity.

Is CVE-1999-0304 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0304?

CVE-1999-0304 primarily affects Bsdi Bsd Os. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0304?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-1999-0304 published?

CVE-1999-0304 was published on 1998-02-01 and last updated on 2026-06-16.

CVE-1999-0304

CVE-1999-0304 is a high-severity vulnerability in Bsdi Bsd Os with a CVSS 2.0 base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.2)
EPSS exploit prediction: 0% (28th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Bsdi Bsd Os
Published: 1998-02-01
Last modified: 2026-06-16

Description

mmap function in BSD allows local attackers in the kmem group to modify memory through devices.

Frequently asked questions

What is CVE-1999-0304?: mmap function in BSD allows local attackers in the kmem group to modify memory through devices.
How severe is CVE-1999-0304?: CVE-1999-0304 has a CVSS 2.0 base score of 7.2, rated high severity.
Is CVE-1999-0304 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (28th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0304?: CVE-1999-0304 primarily affects Bsdi Bsd Os. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0304?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-1999-0304 published?: CVE-1999-0304 was published on 1998-02-01 and last updated on 2026-06-16.

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0304

Affected products (4)

cpe:2.3:o:bsdi:bsd_os:3.0:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:2.2:*:*:*:*:*:*:*
cpe:2.3:o:netbsd:netbsd:2.0.4:*:*:*:*:*:*:*
cpe:2.3:o:openbsd:openbsd:2.2:*:*:*:*:*:*:*

More vulnerabilities in Bsdi Bsd Os

CVE-1999-0879 — Critical (CVSS 10.0): Buffer overflow in WU-FTPD and related FTP servers allows remote attackers to gain root privileges via macro variables…
CVE-1999-0798 — Critical (CVSS 10.0): Buffer overflow in bootpd on OpenBSD, FreeBSD, and Linux systems via a malformed header type.
CVE-1999-0002 — Critical (CVSS 10.0): Buffer overflow in NFS mountd gives root access to remote attackers, mostly in Linux systems.
CVE-1999-0009 — Critical (CVSS 10.0): Inverse query buffer overflow in BIND 4.9 and BIND 8 Releases.
CVE-1999-0323 — Critical (CVSS 10.0): FreeBSD mmap function allows users to modify append-only or immutable files.
CVE-1999-0042 — Critical (CVSS 10.0): Buffer overflow in University of Washington's implementation of IMAP and POP servers.

All CVEs affecting Bsdi Bsd Os →