How severe is CVE-2009-2753?

CVE-2009-2753 has a CVSS 2.0 base score of 10.0, rated critical severity.

Is CVE-2009-2753 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2009-2753?

CVE-2009-2753 primarily affects Ibm Informix Dynamic Server. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2009-2753?

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-2009-2753 published?

CVE-2009-2753 was published on 2010-03-05 and last updated on 2026-06-16.

CVE-2009-2753

CVE-2009-2753 is a critical-severity vulnerability in Ibm Informix Dynamic Server with a CVSS 2.0 base score of 10.0. Its EPSS exploit-prediction score of 11% places it in the 95th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 10.0)
EPSS exploit prediction: 11% (95th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ibm Informix Dynamic Server
Published: 2010-03-05
Last modified: 2026-06-16

Description

Multiple buffer overflows in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM) Portmapper service (aka portmap.exe), as used in IBM Informix Dynamic Server (IDS) 10.x before 10.00.TC9 and 11.x before 11.10.TC3, allow remote attackers to execute arbitrary code via a crafted parameter size.

Frequently asked questions

What is CVE-2009-2753?: Multiple buffer overflows in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM) Portmapper service (aka portmap.exe), as used in IBM Informix Dynamic Server (IDS) 10.x before 10.00.TC9 and 11.x before 11.10.TC3, allow remote attackers to execute arbitrary code via a crafted parameter size.
How severe is CVE-2009-2753?: CVE-2009-2753 has a CVSS 2.0 base score of 10.0, rated critical severity.
Is CVE-2009-2753 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 11% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2009-2753?: CVE-2009-2753 primarily affects Ibm Informix Dynamic Server. In total, 28 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2009-2753?: 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-2009-2753 published?: CVE-2009-2753 was published on 2010-03-05 and last updated on 2026-06-16.

References

Affected products (28)

cpe:2.3:a:ibm:informix_dynamic_server:10.0:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.tc1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc2e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc3e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc4:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc4e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc5:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc5e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc6:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc6e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc7:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc7e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc8:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc8e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc9:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc9e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:10.0.xc10e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc1:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc1de:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc2:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc2e:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:informix_dynamic_server:11.10.xc3e:*:*:*:*:*:*:*

More vulnerabilities in Ibm Informix Dynamic Server

CVE-2010-4070 — Critical (CVSS 10.0): Integer overflow in librpc.dll in portmap.exe (aka the ISM Portmapper service) in ISM before 2.20.TC1.117 in IBM…
CVE-2009-2754 — Critical (CVSS 10.0): Integer signedness error in the authentication functionality in librpc.dll in the Informix Storage Manager (ISM)…
CVE-2008-0949 — Critical (CVSS 10.0): Unspecified vulnerability in IBM Informix Dynamic Server (IDS) 7.x through 11.x allows remote attackers to gain…
CVE-2008-0768 — Critical (CVSS 10.0): Multiple stack-based and heap-based buffer overflows in the Windows RPC components for IBM Informix Storage Manager…
CVE-2011-1033 — Critical (CVSS 9.3): Stack-based buffer overflow in oninit in IBM Informix Dynamic Server (IDS) 11.50 allows remote attackers to execute…
CVE-2012-4857 — Critical (CVSS 9.0): Buffer overflow in IBM Informix 11.50 through 11.50.xC9W2 and 11.70 before 11.70.xC7 allows remote authenticated users…

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