CVE-2009-3517

CRITICAL

nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares v...

Affects 1 product across 1 vendor.

CVSS 2.010.0
EPSS4.4%
Percentile91th
PatchUnknown
CVSS Vector — Plain English Remotely exploitable over the network, low complexity.
◆ AI Analysis — automated analysis, not human-reviewed

This vulnerability was disclosed in 2009. A critical vulnerability affects Ibm systems (CVE-2009-3517). No public exploit code is currently available. Isolate affected systems if patching is not feasible.

BSID: BS-2009-GLOBAL-083844-C • Model: rule-based-v1 • Confidence: MEDIUM

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Frequently Asked Questions
What is CVE-2009-3517?
This vulnerability was disclosed in 2009. A critical vulnerability affects Ibm systems (CVE-2009-3517). No public exploit code is currently available. Isolate affected systems if patching is not feasible.
What is the CVSS score for CVE-2009-3517?
CVE-2009-3517 has CVSS 10.0 (Critical). Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C. EPSS: 4.4%.
Is CVE-2009-3517 actively exploited?
No confirmed active exploitation of CVE-2009-3517 as of 2026-09-25.
How do I remediate CVE-2009-3517?
Priority: MEDIUM. Advisory: http://www-01.ibm.com/support/docview.wss?uid=isg1IZ50444 PSIRT: [email protected]
What systems are affected by CVE-2009-3517?
CVE-2009-3517 affects Ibm Aix.
Vulnerability Details
CVE IDCVE-2009-3517
BSIDBS-2009-GLOBAL-083844-C BreachSpider Global ID
CVSS VectorAV:N/AC:L/Au:N/C:C/I:C/A:C
Published2009-10-01
Last Modified2026-06-16
ICS Relevance0%
SourceNVD
Official Description

nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares via unspecified vectors.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

Vulnerability details: nfs.ext in IBM AIX 5.3.x through 5.3.9 and 6.1.0 through 6.1.2 does not properly use the nfs_portmon setting, which allows remote attackers to bypass intended access restrictions for NFSv4 shares via unspecified vectors. CVSS vector: AV:N/AC:L/Au:N/C:C/I:C/A:C.

Exploitation Likelihood: LOW

Affected Products
VendorProductAffected Versions
Ibm Aix 5.3.0 5.3.7 5.3.8 6.1 6.1.0 6.1.1
+1 more6.1.2
Remediation
View Vendor Advisory →

Remediation Priority: MEDIUM

Vendor PSIRT: [email protected]
Threat Intelligence
● Threat Intelligence Validated: October 2026 | Threat Age: 6223 Days
CISA known-exploitedNot in KEV catalog
Public ExploitNot confirmed
PoC CodeNot confirmed
AI Enrichment Record — provenance & audit hash
Modelrule-based-v1
ConfidenceMEDIUM
Enriched At2026-05-24
SHA-512 Audit Hash7521e8a6d3c4e29bbe5c1dbfd78f07d70d57d52637c41e9c715cfc2f7872638037ebd780d6be2a159d087b8762dc0d083f4d3db9ad1bae08038ce09448f3e89a
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