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CVE-2009-3517

26
FAUCET Score

CVE-2009-3517 describes a critical vulnerability in IBM AIX versions 5.3.x through 5.3.9 and 6.1.0 through 6.1.2, where the nfs.ext component fails to correctly enforce the nfs_portmon setting. This flaw allows unauthenticated remote attackers to bypass intended access restrictions on NFSv4 shares through unspecified vectors. With a CVSS score of 10.0, this vulnerability poses a severe risk, enabling complete compromise of confidentiality, integrity, and availability. Despite its high severity, there is no public exploit code available, no evidence of active exploitation, and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
5.3.0CPE matchmatch criteria
cpe:2.3:o:ibm:aix:5.3.0:*:*:*:*:*:*:*
5.3.7CPE matchmatch criteria
cpe:2.3:o:ibm:aix:5.3.7:*:*:*:*:*:*:*
5.3.8CPE matchmatch criteria
cpe:2.3:o:ibm:aix:5.3.8:*:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
6.1.0CPE matchmatch criteria
cpe:2.3:o:ibm:aix:6.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

10.0HIGH

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

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

Exploit Intelligence

EPSS Score
4.35%
Probability of exploitation in next 30 days
EPSS Percentile
90.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0435 is in the 83rd percentile among its peer group of 51,553 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, 0.1 Mastodon, and 0.4 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

aix.software.ibm.com / aix/efixes/security/nfs4_advisory.asc
PatchVendor Advisory
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6366
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
www-01.ibm.com / support/docview.wss
Vendor Advisory
securityfocus.com / bid/36544
Patch
vupen.com / english/advisories/2009/2788
Vendor Advisory