CVE-2025-24201: Apple Multiple Products

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

Yes, if you run Apple Multiple Products. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-03-13, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-04-03; treat that as the outer limit, not the target.
EPSS 3.8%, percentile 90: FIRST’s model estimates a 3.8% chance of exploitation activity in the next 30 days, higher than 90% of all scored CVEs (elevated). EPSS is a probability, not a verdict.
Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

What it is

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.).

CISA’s summary

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.

Weakness type: CWE-787.

Product: Apple Multiple Products · Assigned by: apple · Published: 2025-03-11

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
Apple	Safari	< 18.3.1
Apple	iOS and iPadOS	< 15.8.4, < 16.7.11, < 18.3.2
Apple	iPadOS	< 17.7.6
Apple	macOS	< 15.3.2
Apple	visionOS	< 2.3.2
Apple	watchOS	< 11.4

Severity scores

Scored by	CVSS	Score	Vector
CISA-ADP	3.1	10 Critical	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`

Attack vector: network (remotely reachable)
Attack complexity: low
Privileges required: none (no login)
User interaction: none
Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

CISA KEV: added 2025-03-13; federal due date 2025-04-03. Known ransomware use: Unknown.
CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA SSVC assessment: exploitation active, automatable yes, technical impact total.
FIRST EPSS (model of 2026-10-21): 3.85% probability of exploitation activity in the next 30 days; percentile 90.

Timeline

2025-03-11 — CVE record published by apple
2025-03-13 — Added to CISA’s Known Exploited Vulnerabilities catalog
2025-04-03 — CISA remediation deadline for US federal agencies
2026-04-02 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Other references from the CVE record and advisory

support.apple.com support.apple.com
support.apple.com support.apple.com
support.apple.com support.apple.com
support.apple.com support.apple.com
seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org
seclists.org seclists.org
lists.debian.org lists.debian.org
seclists.org seclists.org
seclists.org seclists.org
github.com github.com
github.com github.com

All exploited Apple vulnerabilities · Today’s Security Digest