HIGH
libxml2: Inappropriate fetch of entities content
Published Jun 9, 2016
7.1
HIGHCVSS 3.0
EPSS 1.66%
Description
XML external entity (XXE) vulnerability in the xmlStringLenDecodeEntities function in parser.c in libxml2 before 2.9.4, when not in validating mode, allows context-dependent attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.
Affected products
No data.
Configuration 1
- 8.0
Configuration 2
OR
- 12.04
- 14.04
- 15.10
- 16.04
No data.
Red Hat Enterprise Linux 6
libxml2-0:2.7.6-21.el6_8.1
Fixed · RHSA-2016:1292
Red Hat Enterprise Linux 7
libxml2-0:2.9.1-6.el7_2.3
Fixed · RHSA-2016:1292
Red Hat JBoss Core Services
n/a
Fixed · RHSA-2016:2957
Red Hat Enterprise Linux 5
libxml2
Will not fix
Red Hat JBoss Enterprise Web Server 3
libxml2
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | libxml2-0:2.7.6-21.el6_8.1 | Fixed | RHSA-2016:1292 |
| Red Hat Enterprise Linux 7 | libxml2-0:2.9.1-6.el7_2.3 | Fixed | RHSA-2016:1292 |
| Red Hat JBoss Core Services | n/a | Fixed | RHSA-2016:2957 |
| Red Hat Enterprise Linux 5 | libxml2 | Will not fix | n/a |
| Red Hat JBoss Enterprise Web Server 3 | libxml2 | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.1 HIGH NVD
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality Impact High
Integrity Impact None
Availability Impact High
5.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.66% 0.01661
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01661
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (19 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.66% (0.01661) | 75.82th | v5 (v2026.06.15) |
| Sep 22, 2026 | 1.66% (0.01661) | 75.64th | v5 (v2026.06.15) |
| Sep 21, 2026 | 3.23% (0.03226) | 87.69th | v5 (v2026.06.15) |
| Sep 6, 2026 | 1.66% (0.01661) | 75.12th | v5 (v2026.06.15) |
| Sep 5, 2026 | 3.23% (0.03226) | 87.42th | v5 (v2026.06.15) |
| Aug 30, 2026 | 1.66% (0.01661) | 74.99th | v5 (v2026.06.15) |
| Aug 28, 2026 | 3.23% (0.03226) | 87.34th | v5 (v2026.06.15) |
| Aug 24, 2026 | 1.66% (0.01661) | 74.86th | v5 (v2026.06.15) |
| Aug 23, 2026 | 3.23% (0.03226) | 87.29th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.67% (0.01668) | 73.65th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00185) | 38.08th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.79% (0.00794) | 82.28th | v3 (v2023.03.01) |
| Jan 26, 2024 | 0.96% (0.00956) | 81.57th | v3 (v2023.03.01) |
| Dec 23, 2023 | 1.01% (0.01011) | 82.01th | v3 (v2023.03.01) |
| Mar 31, 2023 | 0.71% (0.00714) | 77.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.50% (0.00504) | 72.80th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
Weaknesses (1)
References (34)
- http://jvn.jp/en/jp/JVN17535578/index.html third-party-advisoryx_refsource_JVN
- http://jvndb.jvn.jp/en/contents/2017/JVNDB-2017-000066.html third-party-advisoryx_refsource_JVNDB
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00002.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html vendor-advisoryx_refsource_APPLE
- http://lists.apple.com/archives/security-announce/2016/Jul/msg00005.html vendor-advisoryx_refsource_APPLE
- http://rhn.redhat.com/errata/RHSA-2016-2957.html vendor-advisoryx_refsource_REDHAT
- http://www.openwall.com/lists/oss-security/2016/05/25/2 mailing-listx_refsource_MLIST
- http://www.oracle.com/technetwork/security-advisory/cpujan2018-3236628.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html x_refsource_CONFIRM
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/90865 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1036348 vdb-entryx_refsource_SECTRACK
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.404722 vendor-advisoryx_refsource_SLACKWARE
- http://www.ubuntu.com/usn/USN-2994-1 vendor-advisoryx_refsource_UBUNTU
- http://xmlsoft.org/news.html x_refsource_CONFIRM
- https://access.redhat.com/errata/RHSA-2016:1292 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-4449 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1338701 Issue Tracking
- https://git.gnome.org/browse/libxml2/commit/?id=b1d34de46a11323fccffa9fadeb33be670d602f5 x_refsource_CONFIRMVendor Advisory
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05194709 x_refsource_CONFIRM
- https://kc.mcafee.com/corporate/index?page=content&id=SB10170 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2016-4449
- https://support.apple.com/HT206899 x_refsource_CONFIRM
- https://support.apple.com/HT206901 x_refsource_CONFIRM
- https://support.apple.com/HT206902 x_refsource_CONFIRM
- https://support.apple.com/HT206903 x_refsource_CONFIRM
- https://support.apple.com/HT206904 x_refsource_CONFIRM
- https://support.apple.com/HT206905 x_refsource_CONFIRM
- https://support.cybozu.com/ja-jp/article/9735 x_refsource_CONFIRM
- https://www.cve.org/CVERecord?id=CVE-2016-4449
- https://www.debian.org/security/2016/dsa-3593 vendor-advisoryx_refsource_DEBIAN
- https://www.tenable.com/security/tns-2016-18 x_refsource_CONFIRM
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jun 9, 2016
Updated Aug 6, 2024
Reserved May 2, 2016
Link CVE-2016-4449
CISA Vulnrichment
Updated n/a