CVE-2026-20652

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.3, iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Tahoe 26.3, visionOS 26.3. A remote attacker may be able to cause a denial-of-service.

Published: 2026-02-11 Last update: 2026-04-02 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-20652 is rated Moderate Risk (47.2/100): CVSS High severity, with low exploitation likelihood (EPSS 0.26%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-20652

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-21 0.15% 0.26% +0.10%
2 2026-02-17 0.05% 0.15% +0.10%
3 2026-02-12 — 0.05% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-20652

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 [email protected]
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 3.9 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2026-20652

OS Trackers for CVE-2026-20652

vendor priority summary link
debian end-of-life CVE-2026-20652 end-of-life priority: Debian including 2 source packages (webkit2gtk, wpewebkit), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 7, open 3. https://security-tracker.debian.org/tracker/CVE-2026-20652
redhat high — https://access.redhat.com/security/cve/CVE-2026-20652
suse high — https://www.suse.com/security/cve/CVE-2026-20652/
ubuntu medium CVE-2026-20652 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 36 status rows across 8 suites (bionic, focal, jammy, noble, questing, resolute, upstream, xenial): ignored 14, DNE 13, needs-triage 4, needed 3, not-affected 1, released 1. https://ubuntu.com/security/CVE-2026-20652

Affected software / configurations for CVE-2026-20652

Vendor Product Version Raw CPE
apple safari < 26.3 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 18.7.5 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 26.0, < 26.3 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 18.7.5 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple iphone_os >= 26.0, < 26.3 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos < 26.3 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple visionos < 26.3 cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*

References for CVE-2026-20652

URL Tags
https://support.apple.com/en-us/126346 Release Notes Vendor Advisory
https://support.apple.com/en-us/126347 Release Notes Vendor Advisory
https://support.apple.com/en-us/126348 Release Notes Vendor Advisory
https://support.apple.com/en-us/126353 Release Notes Vendor Advisory
https://support.apple.com/en-us/126354 Release Notes Vendor Advisory
cvelogic Threat Intelligence