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CVE-2011-2013

Microsoft Windows Server 2008 remote code execution

9.8 CRITICALEPSS 32.3%
  1. Published8 Nov 2011

Description

Integer overflow in the TCP/IP implementation in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to execute arbitrary code by sending a sequence of crafted UDP packets to a closed port, aka "Reference Counter Overflow Vulnerability."

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Microsoft Windows 7all versions
Microsoft Windows Server 2008r2
Microsoft Windows Vistaall versions

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2011-2013 being actively exploited?

CVE-2011-2013 is not in the CISA KEV catalog. Its EPSS exploit probability is 32.3%.

How severe is CVE-2011-2013?

CVE-2011-2013 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 32.3% probability of exploitation.

Which products are affected by CVE-2011-2013?

Affected products include Microsoft Windows 7, Microsoft Windows Server 2008, Microsoft Windows Vista.

How do I fix CVE-2011-2013?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2011-2013 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.