CVE-2001-0855

Exp

Buffer overflow in db_loader in ClearCase 4.2 and earlier allows local users to gain root privileges via a long TERM environment variable.

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

CVE-2001-0855 is rated High Exploit Risk (63.3/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.86%). 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-2001-0855

EDB-ID Source Kind Published Link
21150 exploit_db edb 2001-11-09 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2001-0855

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 0.15% 0.86% +0.71%
2 2025-03-17 0.04% 0.15% +0.11%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2001-0855

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.2 2.0 HIGH
AV:L/AC:L/Au:N/C:C/I:C/A:C Click to expand
Access vector (AV:L)
Requires local access to the target system.
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.
 3.9 10.0 [email protected]

Weakness enumeration for CVE-2001-0855

Affected software / configurations for CVE-2001-0855

Vendor Product Version Raw CPE
rational_software clearcase 3.2_plus cpe:2.3:a:rational_software:clearcase:3.2_plus:*:*:*:*:*:*:*
rational_software clearcase 4.0 cpe:2.3:a:rational_software:clearcase:4.0:*:*:*:*:*:*:*
rational_software clearcase 4.1 cpe:2.3:a:rational_software:clearcase:4.1:*:*:*:*:*:*:*
rational_software clearcase 4.2 cpe:2.3:a:rational_software:clearcase:4.2:*:*:*:*:*:*:*

References for CVE-2001-0855

cvelogic Threat Intelligence