CVE-2009-0991

Exp

Unspecified vulnerability in the Listener component in Oracle Database 9.2.0.8, 9.2.0.8DV, 10.1.0.5, 10.2.0.4, and 11.1.0.7 allows remote attackers to affect availability via unknown vectors, a different vulnerability than CVE-2009-1970.

Published: 2009-04-15 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0991 is rated High Exploit Risk (65.6/100): CVSS Medium severity, with high exploitation likelihood (EPSS 50.50%, 98th percentile). 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-2009-0991

EDB-ID Source Kind Published Link
8507 exploit_db edb 2009-04-21 Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-0991

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 2025-12-29 54.14% 50.50% -3.64%
2 2025-10-09 53.86% 54.14% +0.28%
3 2025-10-04 — 53.86% —

Full EPSS history (19 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0991

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.0 2.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P 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:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 2.9 [email protected]

Weakness enumeration for CVE-2009-0991

Affected software / configurations for CVE-2009-0991

Vendor Product Version Raw CPE
oracle database_10g 10.1.0.5 cpe:2.3:a:oracle:database_10g:10.1.0.5:*:*:*:*:*:*:*
oracle database_10g 10.2.0.4 cpe:2.3:a:oracle:database_10g:10.2.0.4:*:*:*:*:*:*:*
oracle database_11g 11.1.0.7 cpe:2.3:a:oracle:database_11g:11.1.0.7:*:*:*:*:*:*:*
oracle database_9i 9.2.0.8 cpe:2.3:a:oracle:database_9i:9.2.0.8:*:*:*:*:*:*:*
oracle database_9i 9.2.0.8dv cpe:2.3:a:oracle:database_9i:9.2.0.8dv:*:*:*:*:*:*:*

References for CVE-2009-0991

cvelogic Threat Intelligence