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Fencer Intel
critical 9.3

CVE-2011-0216 json

Off-by-one error in libxml in Apple Safari before 5.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (hea…

published 2011-07-21 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-0242

cvss
9.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
5.0%
EPSS 5.0% chance of exploitation in 30 days, percentile 92%
public exploits
0
none known

Summary

Off-by-one error in libxml in Apple Safari before 5.0.6 allows remote attackers to execute arbitrary code or cause a denial of service (heap-based buffer overflow and application crash) via a crafted web site.

Patch / fix

  • libxml2 Debian 14, Debian 13, Debian 12 2.7.8.dfsg-5.1

debian advisories DEBIAN-CVE-2011-0216

  • mingw32-libxml2 RHEL 6 2.7.6-6.el6_3
  • libxml2 RHEL 5 2.6.26-2.1.12.el5_7.2
  • libxml2-python RHEL 5 2.6.26-2.1.12.el5_7.2
  • libxml2 RHEL 4 2.6.16-12.9
  • libxml2-python RHEL 4 2.6.16-12.9
  • libxml2 RHEL 6 2.7.6-4.el6
  • libxml2-python RHEL 6 2.7.6-4.el6

red hat advisories RHSA-2013:0217RHSA-2012:0017RHSA-2012:0016RHSA-2011:1749

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-0216 updated cvss 5.1

libxml2: Off-by-one error leading to heap-based buffer overflow in encoding

  • Red Hat Enterprise Linux (v. 5 server) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017
  • Red Hat Enterprise Linux AS version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat Enterprise Linux Desktop (v. 5 client) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017
  • Red Hat Enterprise Linux Desktop (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Desktop Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux Desktop version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9 Red Hat Enterprise Linux ES version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat Enterprise Linux HPC Node (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux HPC Node Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
show 6 more
  • Red Hat Enterprise Linux Server (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Server Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux Workstation (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6
    fixed: vendor fix RHSA-2011:1749
  • Red Hat Enterprise Linux Workstation Optional (v. 6) libxml2 2.7.6-4.el6, libxml2-python 2.7.6-4.el6, mingw32-libxml2 2.7.6-6.el6_3
    fixed: vendor fix RHSA-2013:0217
  • Red Hat Enterprise Linux WS version 4 libxml2 2.6.16-12.9, libxml2-python 2.6.16-12.9
    fixed: vendor fix RHSA-2012:0016
  • Red Hat RHEL Desktop Workstation (v. 5 client) libxml2 2.6.26-2.1.12.el5_7.2, libxml2-python 2.6.26-2.1.12.el5_7.2
    fixed: vendor fix RHSA-2012:0017

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.99% chance of exploitation in the next 30 days, higher than 92% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.