CRITICAL
CVE-2016-4448
CWE-134Published: June 9, 2016· Updated: Jun 17, 2026
9.8
CVSS v3.1
Official Description
Format string vulnerability in libxml2 before 2.9.4 allows attackers to have unspecified impact via format string specifiers in unknown vectors.
Technical Analysis
CVE-2016-4448 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Vendors & Products
Apple6 product(s)
watchosmac os xicloudiphone ositunestvos
HP1 product(s)
icewall federation agent
mcafee1 product(s)
web gateway
Microsoft1 product(s)
windows
Oracle2 product(s)
vm serverlinux
Red Hat7 product(s)
enterprise linuxenterprise linux desktopenterprise linux serverenterprise linux server ausenterprise linux server eusenterprise linux server tusenterprise linux workstation
slackware1 product(s)
slackware linux
tenable1 product(s)
log correlation engine
xmlsoft1 product(s)
libxml2
Source: NVD CPE · 41 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 (54)
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http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.htmlMailing List · Release Notes
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http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.htmlMailing List · Release Notes
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http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.htmlMailing List · Release Notes
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http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.htmlMailing List · Release Notes
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http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.htmlMailing List · Release Notes
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http://rhn.redhat.com/errata/RHSA-2016-2957.htmlThird Party Advisory
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http://www.openwall.com/lists/oss-security/2016/05/25/2Mailing List · Third Party Advisory
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http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.htmlThird Party Advisory
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http://www.securityfocus.com/bid/90856Third Party Advisory · VDB Entry
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http://www.securitytracker.com/id/1036348Third Party Advisory · VDB Entry
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http://xmlsoft.org/news.htmlRelease Notes
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https://access.redhat.com/errata/RHSA-2016:1292Third Party Advisory
Quick Facts
CVE IDCVE-2016-4448
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-134
CISA KEVNo
Affected9 vendor(s)
PublishedJun 9, 2016
Related CVEs (CWE-134)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2016-4448 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.