CVE-2011-2013

Windows 7 vulnerability

CVSS

9.8

EPSS

33.7%

EPSS pct

98th

Exploited

No known

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."

Affected vendor

Microsoft

Affected product

Windows 7

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness type (CWE)

CWE-189
CWE-190 — Integer Overflow or Wraparound

Published

2011-11-08

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no privileges, no user interaction. Successful exploitation leads to high impact to confidentiality, high impact to integrity, high impact to availability.

Its EPSS score of 33.7% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 98% of all scored CVEs.

Check your external exposure to CVE-2011-2013

Confirm whether Microsoft Windows 7 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-2013.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-2013

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-2013 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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