Update your Apple devices to fix actively exploited vulnerabilities! (CVE-2025-14174, CVE-2025-43529)

Google Chromium contains an out of bounds memory access vulnerability in ANGLE, the graphics translation layer that handles rendering APIs such as WebGL. A remote attacker can trigger the flaw by luring a user to open a crafted HTML page, causing the browser to access memory outside of allocated bounds. Successful exploitation may permit memory disclosure or corruption in the renderer process, although the available data does not fully characterize the impact. Any user of a Chromium-based browser is potentially affected, including users of Google Chrome, Microsoft Edge, and Opera, among other Chromium-derived browsers. The vulnerability was added to CISA's Known Exploited Vulnerabilities catalog on 2025-12-12, indicating active exploitation, while no public proof-of-concept is known and no CVSS score has been assigned yet.

Do: Update all Chromium-based browsers (Google Chrome, Microsoft Edge, Opera, and derivatives) to the latest vendor-released versions and verify the installed browser build on managed endpoints, enabling automatic updates where possible. Because this flaw is in CISA KEV, apply vendor mitigations per vendor instructions or follow applicable BOD 22-01 guidance for cloud services, and prioritize patching internet-facing and high-risk user populations.

CVE-2025-43529 is a use-after-free (CWE-416) flaw in Apple's WebKit browser engine, fixed via improved memory management. It is triggered when a device processes maliciously crafted web content, and successful exploitation can lead to arbitrary code execution with network reachability and no privileges required (CVSS 3.1: 8.8, user interaction needed). It affects a broad range of Apple products: Safari, iPhone OS/iOS, iPadOS, macOS, tvOS, visionOS, and watchOS, with fixes delivered in Safari 26.2, iOS/iPadOS 18.7.3 and 26.2, macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, and watchOS 26.2. Apple reports the issue was exploited in an 'extremely sophisticated' targeted attack against specific individuals on iOS versions before iOS 26, and CISA added it to the Known Exploited Vulnerabilities catalog on 2025-12-15 (a companion CVE-2025-14174 was issued for the same report). No public proof-of-concept is known, and EPSS assigns an 8.9% probability of exploitation within 30 days (95th percentile).

Do: Update affected devices to Safari 26.2, iOS/iPadOS 26.2 (or iOS/iPadOS 18.7.3 on devices that remain on the iOS 18 branch), macOS Tahoe 26.2, tvOS 26.2, visionOS 26.2, and watchOS 26.2, prioritizing mobile users and high-risk targeted individuals. Federal agencies must remediate per CISA BOD 22-01 requirements since the CVE is in the KEV catalog (added 2025-12-15); also review the related CVE-2025-14174 addressed by the same updates. Check device fleet inventory for WebKit-exposed Apple hardware that cannot reach the fixed versions and confirm patches have been applied.