CVE-2016-0718

Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.

Published: 2016-05-26 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2016-0718 is rated High Risk (69.9/100): CVSS Critical severity, with medium exploitation likelihood (EPSS 2.83%). High exploitation likelihood—assess exposure and prioritize remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2016-0718

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 2.21% 2.83% +0.61%
2 2026-03-01 2.83% 2.21% -0.61%
3 2026-02-23 — 2.83% —

Full EPSS history (46 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2016-0718

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
9.8 3.1 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 5.9 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2016-0718

OS Trackers for CVE-2016-0718

vendor priority summary link
debian unimportant CVE-2016-0718 unimportant priority: Debian including 4 source packages (expat, firefox, firefox-esr, libxmltok), 13 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 11, open 2. https://security-tracker.debian.org/tracker/CVE-2016-0718
gentoo normal CVE-2016-0718: 1 GLSA(s) (201701-21), 1 atom(s) (dev-libs/expat); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2016-0718
redhat medium — https://access.redhat.com/security/cve/CVE-2016-0718
suse medium CVE-2016-0718 severity moderate: SUSE including 373 source package names (0.9.1:expat-2.1.0-17.1, 0.9.1:libexpat1-2.1.0-17.1, …), 677 product×package rows across 117 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (117 product lines)): Fixed 520, Known Affected 157. https://www.suse.com/security/cve/CVE-2016-0718/
ubuntu medium CVE-2016-0718 medium priority: Ubuntu including 28 source packages (audacity, ayttm, …), 661 status rows across 24 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, precise, questing, trusty, upstream, wily, xenial, yakkety, zesty): not-affected 225, DNE 205, ignored 145, released 36, needed 29, needs-triage 21. https://ubuntu.com/security/CVE-2016-0718

Affected software / configurations for CVE-2016-0718

Vendor Product Version Raw CPE
mozilla firefox < 48.0 cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
apple mac_os_x >= 10.11.0, <= 10.11.5 cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
suse linux_enterprise_debuginfo 11 cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*
suse studio_onsite 1.3 cpe:2.3:a:suse:studio_onsite:1.3:*:*:*:*:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp4:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 11 cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp4:*:*:*:*:*:*
opensuse leap 42.1 cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
suse linux_enterprise_desktop 12 cpe:2.3:o:suse:linux_enterprise_desktop:12:-:*:*:*:*:*:*
suse linux_enterprise_desktop 12 cpe:2.3:o:suse:linux_enterprise_desktop:12:sp1:*:*:*:*:*:*
suse linux_enterprise_server 12 cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*
suse linux_enterprise_server 12 cpe:2.3:o:suse:linux_enterprise_server:12:sp1:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 12 cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 12 cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:sp1:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
libexpat_project libexpat < 2.2.0 cpe:2.3:a:libexpat_project:libexpat:*:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
opensuse opensuse 13.1 cpe:2.3:o:opensuse:opensuse:13.1:*:*:*:*:*:*:*
opensuse opensuse 13.2 cpe:2.3:o:opensuse:opensuse:13.2:*:*:*:*:*:*:*
mcafee policy_auditor < 6.5.1 cpe:2.3:a:mcafee:policy_auditor:*:*:*:*:*:*:*:*
python python >= 2.7.0, < 2.7.15 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.3.0, < 3.3.7 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.4.0, < 3.4.7 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.5.0, < 3.5.4 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*
python python >= 3.6.0, < 3.6.2 cpe:2.3:a:python:python:*:*:*:*:*:*:*:*

References for CVE-2016-0718

URL Tags
http://lists.apple.com/archives/security-announce/2016/Jul/msg00000.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00064.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00006.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00007.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00010.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00004.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00029.html Third Party Advisory
http://packetstormsecurity.com/files/141350/ESET-Endpoint-Antivirus-6-Remote-Code-Execution.html Third Party Advisory VDB Entry
http://rhn.redhat.com/errata/RHSA-2016-2824.html Third Party Advisory
http://seclists.org/fulldisclosure/2017/Feb/68 Mailing List Third Party Advisory
http://support.eset.com/ca6333/ Third Party Advisory
http://www.debian.org/security/2016/dsa-3582 Third Party Advisory
http://www.mozilla.org/security/announce/2016/mfsa2016-68.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/05/17/12 Mailing List Third Party Advisory
http://www.oracle.com/technetwork/security-advisory/cpujul2018-4258247.html Patch Third Party Advisory
http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html Third Party Advisory
http://www.securityfocus.com/bid/90729 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036348 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1036415 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1037705 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2983-1 Third Party Advisory
http://www.ubuntu.com/usn/USN-3044-1 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:2486 Third Party Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1236923 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1296102 Issue Tracking Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10365 Third Party Advisory
https://security.gentoo.org/glsa/201701-21 Third Party Advisory
https://source.android.com/security/bulletin/2016-11-01.html Third Party Advisory
https://support.apple.com/HT206903 Third Party Advisory
https://www.tenable.com/security/tns-2016-20 Third Party Advisory
cvelogic Threat Intelligence