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CVE-2009-0343

27
FAUCET Score

CVE-2009-0343 describes a local privilege escalation vulnerability in Niels Provos Systrace 1.6f and earlier on x86_64 Linux. This flaw allows local users to bypass access restrictions by exploiting race conditions when monitoring 64-bit processes, specifically by making a 32-bit syscall that mirrors a policy-compliant 64-bit syscall. With a CVSS score of 7.2, it is a high-severity vulnerability with low attack complexity, enabling complete compromise of confidentiality, integrity, and availability. While not on the KEV catalog and with no active exploitation reported, a public exploit (EDB-32751) exists, though community discussion and media coverage are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.6eCPE matchmatch criteria
cpe:2.3:a:niels_provos:systrace:*:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:a:niels_provos:systrace:1.1:*:*:*:*:*:*:*
1.2CPE matchmatch criteria
cpe:2.3:a:niels_provos:systrace:1.2:*:*:*:*:*:*:*
1.3CPE matchmatch criteria
cpe:2.3:a:niels_provos:systrace:1.3:*:*:*:*:*:*:*
1.4CPE matchmatch criteria
cpe:2.3:a:niels_provos:systrace:1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

AV:L/AC:L/Au:N/C:C/I:C/A:C

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-32751 · Jan 23, 2009
This CVE's current EPSS score of 0.0082 is in the 73rd percentile among its peer group of 3,241 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.5 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

scarybeastsecurity.blogspot.com / 2009/01/bypassing-syscall-filtering.html
scary.beasts.org / security/CESA-2009-001.html
Exploit
citi.umich.edu / u/provos/systrace
securityfocus.com / archive/1/500377/100/0/threaded
securityfocus.com / bid/33417
Exploit