CVE-2025-43211

The issue was addressed with improved memory handling. This issue is fixed in Safari 18.6, iOS 18.6 and iPadOS 18.6, iPadOS 17.7.9, macOS Sequoia 15.6, tvOS 18.6, visionOS 2.6, watchOS 11.6. Processing web content may lead to a denial-of-service.

Published: 2025-07-29 Last update: 2026-06-17 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2025-43211 is rated Low Risk (34.5/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.35%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

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-2025-43211

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 2026-06-15 0.09% 0.35% +0.27%
2 2026-05-25 0.02% 0.09% +0.06%
3 2025-07-30 — 0.02% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2025-43211

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.2 3.1 MEDIUM
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:L)
They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
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.
 2.5 3.6 134c704f-9b21-4f2e-91b3-4a467353bcc0

Weakness enumeration for CVE-2025-43211

OS Trackers for CVE-2025-43211

vendor priority summary link
debian not yet assigned CVE-2025-43211 not yet assigned 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-2025-43211
gentoo high CVE-2025-43211: 1 GLSA(s) (202511-02), 1 atom(s) (net-libs/webkit-gtk); latest impact high. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2025-43211
redhat medium — https://access.redhat.com/security/cve/CVE-2025-43211
suse medium CVE-2025-43211 severity moderate: SUSE including 96 source package names (WebKitGTK-4.0-lang-2.48.5-150400.4.122.1, WebKitGTK-4.0-lang-2.48.5-150600.12.43.1, …), 375 product×package rows across 30 product lines (SUSE Enterprise Storage 7.1, SUSE Liberty Linux 8, … (30 product lines)): Fixed 375. https://www.suse.com/security/cve/CVE-2025-43211/
ubuntu medium CVE-2025-43211 medium priority: Ubuntu including 5 source packages (qtwebkit-opensource-src, qtwebkit-source, webkit2gtk, webkitgtk, wpewebkit), 31 status rows across 7 suites (bionic, focal, jammy, noble, plucky, upstream, xenial): ignored 14, DNE 9, needs-triage 4, released 4. https://ubuntu.com/security/CVE-2025-43211

Affected software / configurations for CVE-2025-43211

Vendor Product Version Raw CPE
apple safari < 18.6 cpe:2.3:a:apple:safari:*:*:*:*:*:*:*:*
apple ipados < 17.7.9 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple ipados >= 18.0, < 18.6 cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*
apple iphone_os < 18.6 cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
apple macos < 15.6 cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
apple tvos < 18.6 cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*
apple visionos < 2.6 cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*
apple watchos < 11.6 cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*

References for CVE-2025-43211

URL Tags
https://support.apple.com/en-us/124147 Release Notes Vendor Advisory
https://support.apple.com/en-us/124148 Release Notes Vendor Advisory
https://support.apple.com/en-us/124149 Release Notes Vendor Advisory
https://support.apple.com/en-us/124152 Release Notes Vendor Advisory
https://support.apple.com/en-us/124153 Release Notes Vendor Advisory
https://support.apple.com/en-us/124154 Release Notes Vendor Advisory
https://support.apple.com/en-us/124155 Release Notes Vendor Advisory
http://seclists.org/fulldisclosure/2025/Aug/0
http://seclists.org/fulldisclosure/2025/Jul/31
http://seclists.org/fulldisclosure/2025/Jul/32
http://seclists.org/fulldisclosure/2025/Jul/36
http://www.openwall.com/lists/oss-security/2025/08/02/1
https://lists.debian.org/debian-lts-announce/2025/08/msg00015.html
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