All vulnerabilities
CVE-2016-4657

Apple iOS Webkit Memory Corruption Vulnerability

Apple iOSOperating systems
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationExploited in the wildAdded to KEV 24 May 2022CISA KEV
Exploit odds (EPSS)66.8%Chance of exploitation activity in the next 30 days, higher than 99% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version yet
Federal deadline14 Jun 2022Remediation due date for US federal agenciesCISA KEV
CISA required actionApply updates per vendor instructions. CISA KEV

What fixes it

No source in this snapshot names a fixed version.

Timeline

  1. 25 Aug 2016Exploit code publicMetasploit
  2. 25 Aug 2016, 21:00 UTCPublishedCVE List
  3. 24 May 2022Added to CISA KEVCISA KEV

Public exploit code and templates 3

  • Exploit moduleWebKit not_number defineProperties UAF 25 Aug 2016Metasploit
  • Dos exploitNintendo Switch - WebKit Code Execution (PoC) 12 Mar 2017Exploit-DB
  • Remote exploitWebKit - not_number defineProperties UAF (Metasploit) 5 Jun 2018Exploit-DB

Listed so defenders can prioritize. Threatline links to the source and does not host exploit code.

Description

Apple iOS WebKit contains a memory corruption vulnerability that allows attackers to execute remote code or cause a denial-of-service (DoS) via a crafted web site. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Text from CVE List

Affected versions 1

  • n/aaffected: n/aCVE List

References 6