CVE-2009-0343

Exp

Niels Provos Systrace 1.6f and earlier on the x86_64 Linux platform allows local users to bypass intended access restrictions by making a 32-bit syscall with a syscall number that corresponds to a policy-compliant 64-bit syscall, related to race conditions that occur in monitoring 64-bit processes.

Published: 2009-01-29 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2009-0343 is rated High Exploit Risk (62.8/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.82%). 3 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-2009-0343

EDB-ID Source Kind Published Link
32751 exploit_db edb 2009-01-23 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2009-0343

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 0.10% 0.82% +0.71%
2 2025-03-17 0.04% 0.10% +0.06%
3 2023-03-07 — 0.04% —

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2009-0343

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-2009-0343

Affected software / configurations for CVE-2009-0343

Vendor Product Version Raw CPE
niels_provos systrace <= 1.6e cpe:2.3:a:niels_provos:systrace:*:*:*:*:*:*:*:*
niels_provos systrace 1.1 cpe:2.3:a:niels_provos:systrace:1.1:*:*:*:*:*:*:*
niels_provos systrace 1.2 cpe:2.3:a:niels_provos:systrace:1.2:*:*:*:*:*:*:*
niels_provos systrace 1.3 cpe:2.3:a:niels_provos:systrace:1.3:*:*:*:*:*:*:*
niels_provos systrace 1.4 cpe:2.3:a:niels_provos:systrace:1.4:*:*:*:*:*:*:*
niels_provos systrace 1.5 cpe:2.3:a:niels_provos:systrace:1.5:*:*:*:*:*:*:*
niels_provos systrace 1.6 cpe:2.3:a:niels_provos:systrace:1.6:*:*:*:*:*:*:*
niels_provos systrace 1.6a cpe:2.3:a:niels_provos:systrace:1.6a:*:*:*:*:*:*:*
niels_provos systrace 1.6b cpe:2.3:a:niels_provos:systrace:1.6b:*:*:*:*:*:*:*
niels_provos systrace 1.6c cpe:2.3:a:niels_provos:systrace:1.6c:*:*:*:*:*:*:*
niels_provos systrace 1.6d cpe:2.3:a:niels_provos:systrace:1.6d:*:*:*:*:*:*:*

References for CVE-2009-0343

cvelogic Threat Intelligence