CVE-2000-0306

Exp

Buffer overflow in calserver in SCO OpenServer allows remote attackers to gain root access via a long message.

Published: 2001-03-12 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2000-0306 is rated High Exploit Risk (81.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 3.69%). 1 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

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

Public exploit references (Exploit-DB) for CVE-2000-0306

EDB-ID Source Kind Published Link
20620 exploit_db edb 1998-12-29 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2000-0306

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 2026-06-15 7.70% 3.69% -4.01%
2 2026-02-21 3.14% 7.70% +4.56%
3 2025-03-30 — 3.14% —

Full EPSS history (9 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2000-0306

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
10.0 2.0 HIGH
AV:N/AC:L/Au:N/C:C/I:C/A:C 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:C)
Complete confidentiality impact.
Integrity impact (I:C)
Complete integrity impact.
Availability impact (A:C)
Complete availability impact.
 10.0 10.0 [email protected]

Weakness enumeration for CVE-2000-0306

Affected software / configurations for CVE-2000-0306

Vendor Product Version Raw CPE
sco openserver <= 5.04 cpe:2.3:o:sco:openserver:*:*:*:*:*:*:*:*

References for CVE-2000-0306

cvelogic Threat Intelligence