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Fencer Vulns
critical 10.0

CVE-2008-4226 json

Integer overflow in the xmlSAX2Characters function in libxml2 2.7.2 allows context-dependent attackers to cause a denial of service (memory…

published 2008-11-25 17 y ago modified 2026-06-16 4 mo ago also EUVD-2008-4209

cvss
10.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.1%
EPSS 4.1% chance of exploitation in 30 days, percentile 90%
public exploits
0
none known

Summary

Integer overflow in the xmlSAX2Characters function in libxml2 2.7.2 allows context-dependent attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via a large XML document.

Patch / fix

  • libxml2 Debian 14, Debian 13, Debian 12 2.6.32.dfsg-5

debian advisories DEBIAN-CVE-2008-4226

  • libxml2 RHEL 2.1 2.4.19-12.ent
  • libxml2 RHEL 3 2.5.10-14
  • libxml2 RHEL 4 2.6.16-12.6
  • libxml2 RHEL 5 2.6.26-2.1.2.7
  • libxml2-python RHEL 2.1 2.4.19-12.ent
  • libxml2-python RHEL 3 2.5.10-14
  • libxml2-python RHEL 4 2.6.16-12.6
  • libxml2-python RHEL 5 2.6.26-2.1.2.7

red hat advisories RHSA-2008:0988

  • libxml2 openSUSE Tumbleweed 2.9.4-1.22
  • python-libxml2 openSUSE Tumbleweed 2.9.4-1.4

opensuse advisories openSUSE-SU-2024:10192-1openSUSE-SU-2024:10228-1

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-2008-4226 updated

libxml2: integer overflow leading to memory corruption in xmlSAX2Characters

  • Red Hat Desktop version 3 libxml2 2.5.10-14, libxml2-python 2.5.10-14 Red Hat Enterprise Linux (v. 5 server) libxml2 2.6.26-2.1.2.7, libxml2-python 2.6.26-2.1.2.7 Red Hat Enterprise Linux AS (Advanced Server) version 2.1 libxml2 2.4.19-12.ent, libxml2-python 2.4.19-12.ent Red Hat Enterprise Linux AS version 3 libxml2 2.5.10-14, libxml2-python 2.5.10-14 Red Hat Enterprise Linux AS version 4 libxml2 2.6.16-12.6, libxml2-python 2.6.16-12.6 Red Hat Enterprise Linux Desktop (v. 5 client) libxml2 2.6.26-2.1.2.7, libxml2-python 2.6.26-2.1.2.7
    +9 more products
    Red Hat Enterprise Linux Desktop version 4 libxml2 2.6.16-12.6, libxml2-python 2.6.16-12.6 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) libxml2 2.6.26-2.1.2.7, libxml2-python 2.6.26-2.1.2.7 Red Hat Enterprise Linux ES version 2.1 libxml2 2.4.19-12.ent, libxml2-python 2.4.19-12.ent Red Hat Enterprise Linux ES version 3 libxml2 2.5.10-14, libxml2-python 2.5.10-14 Red Hat Enterprise Linux ES version 4 libxml2 2.6.16-12.6, libxml2-python 2.6.16-12.6 Red Hat Enterprise Linux WS version 2.1 libxml2 2.4.19-12.ent, libxml2-python 2.4.19-12.ent Red Hat Enterprise Linux WS version 3 libxml2 2.5.10-14, libxml2-python 2.5.10-14 Red Hat Enterprise Linux WS version 4 libxml2 2.6.16-12.6, libxml2-python 2.6.16-12.6 Red Hat Linux Advanced Workstation 2.1 libxml2 2.4.19-12.ent, libxml2-python 2.4.19-12.ent
    fixed: vendor fix RHSA-2008:0988

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

4.05% chance of exploitation in the next 30 days, higher than 90% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-399 Resource Management Errors

References

Sources

Fencer Vulns 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.