CVE-2011-2008

Host Integration Server vulnerability

CVSS

5.0

EPSS

21.3%

EPSS pct

97th

Exploited

No known

Microsoft Host Integration Server (HIS) 2004 SP1, 2006 SP1, 2009, and 2010 allows remote attackers to cause a denial of service (SNA Server service outage) via crafted TCP or UDP traffic, aka "Access of Unallocated Memory DoS Vulnerability."

Affected vendor

Microsoft

Affected product

Host Integration Server

CVSS vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Weakness type (CWE)

CWE-20 — Improper Input Validation

Published

2011-10-12

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 21.3% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 97% of all scored CVEs.

Check your external exposure to CVE-2011-2008

Confirm whether Microsoft Host Integration Server is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-2008.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-2008

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-2008 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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