HOMEVULNERABILITIESCVE-2016-9487
HIGH

CVE-2016-9487

CWE-611Published: July 13, 2018· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

EpubCheck 4.0.1 does not properly restrict resolving external entities when parsing XML in EPUB files during validation. An attacker who supplies a specially crafted EPUB file may be able to exploit this behavior to read arbitrary files, or have the victim execute arbitrary requests on his behalf, abusing the victim's trust relationship with other entities.

NVD Source

Technical Analysis

CVE-2016-9487 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

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 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.None
User InteractionRequired
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors & Products

w31 product(s)
epubcheck
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

ADVISORYhttps://www.kb.cert.org/vuls/id/779243
ADVISORYhttps://www.securityfocus.com/bid/94864/
ADVISORYhttps://www.kb.cert.org/vuls/id/779243
ADVISORYhttps://www.securityfocus.com/bid/94864/

All References (4)

→
https://www.kb.cert.org/vuls/id/779243Third Party Advisory · US Government Resource
→
https://www.securityfocus.com/bid/94864/Third Party Advisory · VDB Entry
→
https://www.kb.cert.org/vuls/id/779243Third Party Advisory · US Government Resource
→
https://www.securityfocus.com/bid/94864/Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2016-9487
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-611
CISA KEVNo
Affected1 vendor(s)
PublishedJul 13, 2018

Related CVEs (CWE-611)

CVE-2018-1000124
10.0
CVE-2017-7664
10.0
CVE-2023-38490
10.0
CVE-2018-1000837
10.0
CVE-2018-1000652
10.0
CVE-2017-8110
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2016-9487 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.
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