SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

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.

MEDIUM 5.0EPSS 1.09%

Does this matter?

Lower severity and a low EPSS score (1.09%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
1.09% probability · 65th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
sco/open desktop · sco/openserver · sco/unixware
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.09%26 October 202626 October 2026

EPSS 1.1% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.