CVE-2026-43660: apple ios and ipados Protection Mechanism Failure
CVSS: 7.5v3.1HighModified
AliasesUBUNTU-CVE-2026-43660DEBIAN-CVE-2026-43660
Published 11-05-2026Last modified 13-05-2026
Vulnerability summary
CVE-2026-43660 is a high (CVSS 7.5) Protection Mechanism Failure vulnerability in apple ios and ipados. EPSS estimates a 0.42% chance of exploitation in the next 30 days, higher than 35.1% of scored vulnerabilities.
CVSS score
7.5/10
010
High · v3.1 (CVE.org)EPSS score
0.42%
0%100%
Low · +0.15 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 17 · Related 8Timeline
- 11-05-2026PublishedVulnerability first disclosed.
- 13-05-2026Last modifiedVulnerability information updated.
Description
A validation issue was addressed with improved logic. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may prevent Content Security Policy from being enforced.
CVSS metrics
4 scores · 4 sources · 1 versionHigh 7.5Preferred score · CVE.org (CNA)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVDNIST7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.42%
Chance of exploitation in the next 30 days
Percentile
35%
Versus all other CVEs
30-day change
+0.15 pp
From 0.27% on 20-09-2026
20-09-202620-10-2026
EPSS score0.42%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Apple8 products
- ios and ipados< 18.7.9 | < 26.5
- ipados< 18.7.9 | ≥ 26.0, < 26.5
- iphone_os< 18.7.9 | ≥ 26.0, < 26.5
- macos< 26.5 | ≥ 26.0, < 26.5
- safari< 26.5
Ubuntu5 products
- qtwebkit-opensource-srcAll versions (No fix recorded)
- qtwebkit-sourceAll versions (No fix recorded)
- webkit2gtkAll versions (No fix recorded) | < 2.52.6-0ubuntu0.24.04.1 | < 2.52.6-0ubuntu0.26.04.1
- webkitgtkAll versions (No fix recorded)
- wpewebkitAll versions (No fix recorded)
Debian2 products
- webkit2gtkAll versions (No fix recorded) | < 2.52.5-1~deb13u1 | < 2.52.4-1
- wpewebkitAll versions (No fix recorded) | < 2.52.4-1
3 vendors · 15 products
