CVE-2016-1859

high

Published 2016-05-20 · 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

The WebKit Canvas implementation in Apple iOS before 9.3.2, Safari before 9.1.1, and tvOS before 9.2.1 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site.

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/HT206568

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — https://support.apple.com/HT206565

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — https://support.apple.com/HT206564

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — http://lists.apple.com/archives/security-announce/2016/May/msg00005.html

vendor Authored 2026-05-27

Vendor advisory: product-security@apple.com — http://lists.apple.com/archives/security-announce/2016/May/msg00002.html

vendor Authored 2026-05-27

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

OS impact

OS	Version	Status	Fixed in
macos		affected	`9.3.2`

Application impact

Vendor	Product	Versions	Fixed
apple	safari	`{"endExcluding":"9.1.1"}`	`9.1.1`
webkitgtk	webkitgtk\+	`{"endExcluding":"2.12.1"}`	`2.12.1`

References

CWEs

CWE-119

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