CVE-2011-1944

Libxml2 vulnerability

CVSS

9.3

EPSS

13.4%

EPSS pct

96th

Exploited

No known

Integer overflow in xpath.c in libxml2 2.6.x through 2.6.32 and 2.7.x through 2.7.8, and libxml 1.8.16 and earlier, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted XML file that triggers a heap-based buffer overflow when adding a new namespace node, related to handling of XPath expressions.

Affected vendor

Xmlsoft

Affected product

Libxml2

CVSS vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Weakness type (CWE)

CWE-189

Published

2011-09-02

Risk analysis

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

Its EPSS score of 13.4% reflects a moderate probability of exploitation activity in the wild over the next 30 days, placing it above 96% of all scored CVEs.

Check your external exposure to CVE-2011-1944

Confirm whether Xmlsoft Libxml2 is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2011-1944.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2011-1944

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2011-1944 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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