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CVE-2016-4483

27
FAUCET Score

CVE-2016-4483 is a denial-of-service vulnerability in the libxml2 library, specifically within the xmlBufAttrSerializeTxtContent function, affecting various Debian, Oracle, and xmlsoft products. This flaw allows remote attackers to trigger an out-of-bounds read and application crash by providing a non-UTF-8 attribute value during XML serialization. Rated with a CVSS score of 7.5 (High), it presents a low-complexity attack vector with no user interaction required, leading to a complete loss of availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.9.4CPE matchmatch criteria
cpe:2.3:a:xmlsoft:libxml2:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
11.3CPE matchmatch criteria
cpe:2.3:o:oracle:solaris:11.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
6.17%
Probability of exploitation in next 30 days
EPSS Percentile
92.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0617 is in the 88th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (6)

redhatpatch availablevia redhat_api
Product: Text-Only JBCS
View patch
redhatno patchvia redhat_api
Product: Red Hat JBoss Core ServicesFixed in: httpd
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libxml2
redhatend of lifevia redhat_api
Product: Red Hat JBoss Enterprise Web Server 3Fixed in: libxml2

Vendor Advisories (1)

redhatCVE-2016-4483Moderate

libxml2: out-of-bounds read

May 3, 2016

References

rhn.redhat.com / errata/RHSA-2016-2957.html
Third Party Advisory
git.gnome.org / browse/libxml2/commit
PatchThird Party Advisory
lists.apache.org / thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
lists.apache.org / thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
security.gentoo.org / glsa/201701-37
Third Party Advisory
tenable.com / security/tns-2016-18
Third Party Advisory
debian.org / security/2016/dsa-3593
Third Party Advisory
openwall.com / lists/oss-security/2016/05/03/8
ExploitMailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/05/04/7
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/06/07/4
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2016/06/07/5
Mailing ListPatchThird Party Advisory
oracle.com / technetwork/topics/security/bulletinjul2016-3090568.html
Third Party Advisory
securityfocus.com / bid/90013
Third Party AdvisoryVDB Entry
securitytracker.com / id/1036348
Third Party AdvisoryVDB Entry