How severe is CVE-2009-2727?

CVE-2009-2727 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2009-2727 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2727?

CVE-2009-2727 primarily affects Ibm Aix. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2727?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2009-2727 published?

CVE-2009-2727 was published on 2009-08-10 and last updated on 2026-06-16.

CVE-2009-2727

CVE-2009-2727 is a critical-severity vulnerability in Ibm Aix with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 27% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 27% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ibm Aix
Published: 2009-08-10
Last modified: 2026-06-16

Description

Stack-based buffer overflow in the _tt_internal_realpath function in the ToolTalk library (libtt.a) in IBM AIX 5.2.0, 5.3.0, 5.3.7 through 5.3.10, and 6.1.0 through 6.1.3, when the rpc.ttdbserver daemon is enabled in /etc/inetd.conf, allows remote attackers to execute arbitrary code via a long XDR-encoded ASCII string to remote procedure 15.

Frequently asked questions

What is CVE-2009-2727?: Stack-based buffer overflow in the _tt_internal_realpath function in the ToolTalk library (libtt.a) in IBM AIX 5.2.0, 5.3.0, 5.3.7 through 5.3.10, and 6.1.0 through 6.1.3, when the rpc.ttdbserver daemon is enabled in /etc/inetd.conf, allows remote attackers to execute arbitrary code via a long XDR-encoded ASCII string to remote procedure 15.
How severe is CVE-2009-2727?: CVE-2009-2727 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2009-2727 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 27% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2727?: CVE-2009-2727 primarily affects Ibm Aix. In total, 16 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2727?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2009-2727 published?: CVE-2009-2727 was published on 2009-08-10 and last updated on 2026-06-16.

References

Affected products (16)

cpe:2.3:o:ibm:aix:5.2:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.2.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.2.0.50:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.2.0.54:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.2.2:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.2_l:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.7:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.8:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.9:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:5.3.10:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.0:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.1:*:*:*:*:*:*:*
cpe:2.3:o:ibm:aix:6.1.2:*:*:*:*:*:*:*

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