CVE-2025-43510: 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 2026-03-20, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2026-04-03; treat that as the outer limit, not the target.
EPSS 0.4%, percentile 28: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 28% of all scored CVEs (low). EPSS is a probability, not a verdict.
Needs local access needed. Lower urgency for most teams unless an attacker could already run code on the machine.

What it is

A memory corruption issue was addressed with improved lock state checking. This issue is fixed in iOS 18.7.2 and iPadOS 18.7.2, iOS 26.1 and iPadOS 26.1, macOS Sequoia 15.7.2, macOS Sonoma 14.8.2, macOS Tahoe 26.1, tvOS 26.1, visionOS 26.1, watchOS 26.1. A malicious application may cause unexpected changes in memory shared between processes.

CISA’s summary

Apple watchOS, iOS, iPadOS, macOS, visionOS, and tvOS contain an improper locking vulnerability that could allow a malicious application to cause unexpected changes in memory shared between processes.

Weakness type: CWE-667.

Product: Apple Multiple Products · Assigned by: apple · Published: 2025-12-12

Affected and fixed versions

Vendor	Product	Affected versions (per CVE record)
Apple	iOS and iPadOS	< 18.7.2, < 26.1
Apple	macOS	< 14.8.2, < 15.7.2, < 26.1
Apple	tvOS	< 26.1
Apple	visionOS	< 26.1
Apple	watchOS	< 26.1

Severity scores

Scored by	CVSS	Score	Vector
CISA-ADP	3.1	7.8 High	`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Attack vector: local access needed
Attack complexity: low
Privileges required: none (no login)
User interaction: required (a user must click/open something)
Scope: unchanged

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 2026-03-20; federal due date 2026-04-03. 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 no, technical impact total.
FIRST EPSS (model of 2026-10-21): 0.36% probability of exploitation activity in the next 30 days; percentile 28.

Timeline

2025-12-12 — CVE record published by apple
2026-03-20 — Added to CISA’s Known Exploited Vulnerabilities catalog
2026-04-02 — CVE record last updated
2026-04-03 — CISA remediation deadline for US federal agencies

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

cloud.google.com cloud.google.com

All exploited Apple vulnerabilities · Today’s Security Digest