HOME VULNERABILITIESCVE-2016-1858

MEDIUM

CVE-2016-1858

CWE-200Published: May 20, 2016· Updated: Jun 17, 2026

6.5

CVSS v3.1

Official Description

WebKit, as used in Apple iOS before 9.3.2, Safari before 9.1.1, and tvOS before 9.2.1, improperly tracks taint attributes, which allows remote attackers to obtain sensitive information via a crafted web site.

Technical Analysis

CVE-2016-1858 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

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), with a CVSS base score of 6.5.

From a weakness classification perspective (CWE-200): Information exposure vulnerabilities leak sensitive data to unauthorized actors.

CVSS v3.1 Vector Breakdown

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges Req.None

User InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Affected Vendors & Products

Apple3 product(s)

safariiphone ostvos

webkitgtk1 product(s)

webkitgtk\+

Source: NVD CPE · 4 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time

Offensive Security exploit database

GitHub PoC Search

Community PoC repositories

Rapid7 / Metasploit

Metasploit module search

Security advisories & exploits

Official NIST entry

CVE Program entry

External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00001.html

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00002.html

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00005.html

ADVISORYhttp://packetstormsecurity.com/files/137229/WebKitGTK-Code-Execution-Denial-Of-Service-Memory-Corruption.html

ADVISORYhttp://www.securityfocus.com/archive/1/538522/100/0/threaded

ADVISORYhttp://www.securitytracker.com/id/1035888

ADVISORYhttps://support.apple.com/HT206564

ADVISORYhttps://support.apple.com/HT206565

ADVISORYhttps://support.apple.com/HT206568

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00001.html

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00002.html

ADVISORYhttp://lists.apple.com/archives/security-announce/2016/May/msg00005.html

ADVISORYhttp://packetstormsecurity.com/files/137229/WebKitGTK-Code-Execution-Denial-Of-Service-Memory-Corruption.html

ADVISORYhttp://www.securityfocus.com/archive/1/538522/100/0/threaded

ADVISORYhttp://www.securitytracker.com/id/1035888

ADVISORYhttps://support.apple.com/HT206564

ADVISORYhttps://support.apple.com/HT206565

ADVISORYhttps://support.apple.com/HT206568

All References (18)

→

http://lists.apple.com/archives/security-announce/2016/May/msg00001.htmlMailing List · Vendor Advisory

→

http://lists.apple.com/archives/security-announce/2016/May/msg00002.htmlMailing List · Vendor Advisory

→

http://lists.apple.com/archives/security-announce/2016/May/msg00005.htmlMailing List · Vendor Advisory

→

http://packetstormsecurity.com/files/137229/WebKitGTK-Code-Execution-Denial-Of-Service-Memory-Corruption.htmlThird Party Advisory · VDB Entry

→

http://www.securityfocus.com/archive/1/538522/100/0/threadedThird Party Advisory · VDB Entry

→

http://www.securitytracker.com/id/1035888Third Party Advisory · VDB Entry

→

https://support.apple.com/HT206564Vendor Advisory

→

https://support.apple.com/HT206565Vendor Advisory

→

https://support.apple.com/HT206568Vendor Advisory

→

http://lists.apple.com/archives/security-announce/2016/May/msg00001.htmlMailing List · Vendor Advisory

→

http://lists.apple.com/archives/security-announce/2016/May/msg00002.htmlMailing List · Vendor Advisory

→

http://lists.apple.com/archives/security-announce/2016/May/msg00005.htmlMailing List · Vendor Advisory

→

http://packetstormsecurity.com/files/137229/WebKitGTK-Code-Execution-Denial-Of-Service-Memory-Corruption.htmlThird Party Advisory · VDB Entry

→

http://www.securityfocus.com/archive/1/538522/100/0/threadedThird Party Advisory · VDB Entry

→

http://www.securitytracker.com/id/1035888Third Party Advisory · VDB Entry

Quick Facts

CVE IDCVE-2016-1858

CVSS Score6.5 / 10

SeverityMEDIUM

WeaknessCWE-200

CISA KEVNo

Affected2 vendor(s)

PublishedMay 20, 2016

Related CVEs (CWE-200)

Recommended Actions

→Apply vendor patches immediately
→Monitor CVE-2016-1858 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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