CVE-2016-4623

high

Published 2016-07-22 · Modified 2026-05-06

CVSS v3

8.8

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

CVSS v2

6.8

VIR risk

8.8

Description

WebKit in Apple iOS before 9.3.3, Safari before 9.1.2, and tvOS before 9.2.2 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, a different vulnerability than CVE-2016-4589, CVE-2016-4622, and CVE-2016-4624.

Predictions

Exploit likelihood

92%

Patch ETA

—

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — https://support.apple.com/HT206905

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — https://support.apple.com/HT206902

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — https://support.apple.com/HT206900

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — http://lists.apple.com/archives/security-announce/2016/Jul/msg00004.html

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — http://lists.apple.com/archives/security-announce/2016/Jul/msg00003.html

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — http://lists.apple.com/archives/security-announce/2016/Jul/msg00001.html

OS impact

OS	Version	Status	Fixed in
macos		affected	`9.3.3`

Application impact

Vendor	Product	Versions	Fixed
apple	safari	`{"endExcluding":"9.1.2"}`	`9.1.2`

References

CWEs

CWE-119

Verify integrity in audit chain (admin only). AS-IS.