CRITICAL
CVE-2008-4226
CWE-399Published: November 25, 2008· Updated: Jun 16, 2026
10.0
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2008-4226 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.
User Interaction
Scope
Impact
ConfidentialityC
IntegrityC
AvailabilityC
AV:N/AC:L/Au:N/C:C/I:C/A:C
Affected Vendors & Products
xmlsoft1 product(s)
libxml
Source: NVD CPE · 1 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (108)
→
http://secunia.com/advisories/32762Vendor Advisory
→
http://secunia.com/advisories/32764Vendor Advisory
→
http://secunia.com/advisories/32766Vendor Advisory
→
http://secunia.com/advisories/32773Vendor Advisory
→
http://secunia.com/advisories/32802Vendor Advisory
→
http://secunia.com/advisories/32807Vendor Advisory
→
http://secunia.com/advisories/32811Vendor Advisory
Quick Facts
CVE IDCVE-2008-4226
CVSS Score10.0 / 10
SeverityCRITICAL
WeaknessCWE-399
CISA KEVNo
Affected1 vendor(s)
PublishedNov 25, 2008
Related CVEs (CWE-399)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2008-4226 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.