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CVE-2025-24201

Apple Multiple Products WebKit Out-of-Bounds Write

10.0 CRITICALActively exploited (CISA KEV)EPSS 3.85%
  1. Published11 Mar 2025
  2. Added to CISA KEV13 Mar 2025
  3. Remediation due3 Apr 2025
Actively exploited (CISA KEV)

Apple iOS, iPadOS, macOS, and other Apple products contain an out-of-bounds write vulnerability in WebKit that may allow maliciously crafted web content to break out of Web Content sandbox. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Added to KEV: 13 Mar 2025Federal remediation due: 3 Apr 2025

Description

An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions. This issue is fixed in Safari 18.3.1, iOS 15.8.4 and iPadOS 15.8.4, iOS 16.7.11 and iPadOS 16.7.11, iOS 18.3.2 and iPadOS 18.3.2, iPadOS 17.7.6, macOS Sequoia 15.3.2, visionOS 2.3.2, watchOS 11.4. Maliciously crafted web content may be able to break out of Web Content sandbox. This is a supplementary fix for an attack that was blocked in iOS 17.2. (Apple is aware of a report that this issue may have been exploited in an extremely sophisticated attack against specific targeted individuals on versions of iOS before iOS 17.2.).

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Apple Safari< 18.3.1
Apple iPadOS≥ 15.8 < 15.8.4 · ≥ 16.7 < 16.7.11 · ≥ 17.0 < 17.7.6 · ≥ 18.0 < 18.3.2
Apple iPhone OS≥ 15.8 < 15.8.4 · ≥ 16.7 < 16.7.11 · ≥ 17.0 < 18.3.2
Apple macOS≥ 15.0 < 15.3.2
Apple Visionos< 2.3.2
Apple Watchos< 11.4
Debian Linux11.0

Remediation

Fixed in
Apple Safari≥ 18.3.1
Apple iPadOS≥ 15.8.4
Apple iPhone OS≥ 15.8.4
Apple macOS≥ 15.3.2
Apple Visionos≥ 2.3.2
Apple Watchos≥ 11.4

References

and 11 more references

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Frequently asked

Is CVE-2025-24201 being actively exploited?

Yes. CVE-2025-24201 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added 13 Mar 2025.

How severe is CVE-2025-24201?

CVE-2025-24201 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 3.85% probability of exploitation.

Which products are affected by CVE-2025-24201?

Affected products include Apple Safari, Apple iPadOS, Apple iPhone OS, Apple macOS, Apple Visionos, and 2 more.

How do I fix CVE-2025-24201?

Upgrade affected software to a fixed version, for example Apple Safari 18.3.1, Apple iPadOS 15.8.4, Apple iPhone OS 15.8.4 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-24201 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. Because it is on the CISA KEV list, Secuno flags any affected asset as top-priority automatically. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.