How severe is CVE-2000-0307?

CVE-2000-0307 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2000-0307 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0307?

CVE-2000-0307 primarily affects Sco Open Desktop. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2000-0307?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0307 published?

CVE-2000-0307 was published on 2001-03-12 and last updated on 2026-06-16.

CVE-2000-0307

CVE-2000-0307 is a medium-severity vulnerability in Sco Open Desktop with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 1% (62nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sco Open Desktop
Published: 2001-03-12
Last modified: 2026-06-16

Description

Vulnerability in xserver in SCO UnixWare 2.1.x and OpenServer 5.05 and earlier allows an attacker to cause a denial of service which prevents access to reserved port numbers below 1024.

Frequently asked questions

What is CVE-2000-0307?: Vulnerability in xserver in SCO UnixWare 2.1.x and OpenServer 5.05 and earlier allows an attacker to cause a denial of service which prevents access to reserved port numbers below 1024.
How severe is CVE-2000-0307?: CVE-2000-0307 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2000-0307 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (62nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0307?: CVE-2000-0307 primarily affects Sco Open Desktop. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2000-0307?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0307 published?: CVE-2000-0307 was published on 2001-03-12 and last updated on 2026-06-16.

References

ftp://ftp.sco.com/SSE/security_bulletins/SB-99.07b

Affected products (3)

cpe:2.3:o:sco:open_desktop:*:*:*:*:*:*:*:*
cpe:2.3:o:sco:openserver:*:*:*:*:*:*:*:*
cpe:2.3:o:sco:unixware:*:*:*:*:*:*:*:*

More vulnerabilities in Sco Open Desktop

CVE-1999-0009 — Critical (CVSS 10.0): Inverse query buffer overflow in BIND 4.9 and BIND 8 Releases.
CVE-1999-1138 — Critical (CVSS 10.0): SCO UNIX System V/386 Release 3.2, and other SCO products, installs the home directories (1) /tmp for the dos user, and…
CVE-1999-0017 — High (CVSS 7.5): FTP servers can allow an attacker to connect to arbitrary ports on machines other than the FTP client, aka FTP bounce.
CVE-1999-1185 — High (CVSS 7.2): Buffer overflow in SCO mscreen allows local users to gain root privileges via a long terminal entry (TERM) in the…
CVE-1999-1209 — High (CVSS 7.2): Vulnerability in scoterm in SCO OpenServer 5.0 and SCO Open Desktop/Open Server 3.0 allows local users to gain root…
CVE-1999-0033 — High (CVSS 7.2): Command execution in Sun systems via buffer overflow in the at program.

All CVEs affecting Sco Open Desktop →