Secuno
ENNL
Book demo

CVE-2025-43526

Apple Safari vulnerability

9.8 CRITICALEPSS 0.53%
  1. Published17 Dec 2025

Description

This issue was addressed with improved URL validation. This issue is fixed in Safari 26.2, macOS Tahoe 26.2. On a Mac with Lockdown Mode enabled, web content opened via a file URL may be able to use Web APIs that should be restricted.

CVSS 3.1 breakdown

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

Affected products

Apple Safari< 26.2
Apple macOS< 26.2

Remediation

Fixed in
Apple Safari≥ 26.2
Apple macOS≥ 26.2

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-1082619.3
Tina is a headless content management system. Prior to tinacms 3.14.0 and @tinacms/app…
CVE-2026-1011528.0
Insufficient validation in the Single Sign-On (SSO) login flow could allow a remote,…
CVE-2026-1010909.8
Nezha 2.2.3 contains a Host header injection regression in the OAuth2 redirect…
CVE-2026-546189.4
Obsidian Web MCP is a secure remote MCP server for Obsidian vaults. Prior to 0.2.0,…
CVE-2026-540729.3
Authorizer is an open-source, self-hostable authentication and authorization server.…
CVE-2026-888878.6
Renovate is a dependency update automation tool. When listing tags/digests for a…

Frequently asked

Is CVE-2025-43526 being actively exploited?

CVE-2025-43526 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.53%.

How severe is CVE-2025-43526?

CVE-2025-43526 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.53% probability of exploitation.

Which products are affected by CVE-2025-43526?

Affected products include Apple Safari, Apple macOS.

How do I fix CVE-2025-43526?

Upgrade affected software to a fixed version, for example Apple Safari 26.2, Apple macOS 26.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-43526 against the real software inventory on every managed device, as each hourly inventory arrives. 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. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

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