CVE-2026-20634
Description
The issue was addressed with improved memory handling. This issue is fixed in iOS 18.7.5 and iPadOS 18.7.5, iOS 26.3 and iPadOS 26.3, macOS Sequoia 15.7.4, macOS Sonoma 14.8.4, macOS Tahoe 26.3, tvOS 26.3, visionOS 26.3, watchOS 26.3. Processing a maliciously crafted image may result in disclosure of process memory.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Processing a maliciously crafted image may lead to disclosure of process memory; fixed in recent Apple OS updates.
A memory handling issue in image processing could lead to disclosure of process memory when a maliciously crafted image is processed. The issue was addressed with improved memory handling.
Exploitation requires an attacker to deliver a malicious image to the target, which may occur via websites, email, or other messaging platforms. No specific authentication or elevated privileges are needed beyond the user opening the image.
An attacker exploiting this vulnerability could potentially access sensitive information from process memory, leading to information disclosure.
Apple has released security updates for multiple platforms, including iOS 18.7.5 and iPadOS 18.7.5 [4], iOS 26.3 and iPadOS 26.3 [2], macOS Sequoia 15.7.4, macOS Sonoma 14.8.4 [3], macOS Tahoe 26.3 [1], tvOS 26.3, visionOS 26.3, and watchOS 26.3. Users are advised to update to the latest versions.
AI Insight generated on May 19, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
14cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <18.7.5
- (no CPE)range: < 18.7.5 and < 26.3
cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <26.3
- (no CPE)range: < 26.3
cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*range: <26.3
- (no CPE)range: < 26.3
cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <26.3
- (no CPE)range: < 26.3
- Range: < 18.7.5 and < 26.3
- Range: < 15.7.4
- Range: < 14.8.4
- Range: < 26.3
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
8- support.apple.com/en-us/126346nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126347nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126348nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126349nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126350nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126351nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126352nvdRelease NotesVendor Advisory
- support.apple.com/en-us/126353nvdRelease NotesVendor Advisory
News mentions
1- ZDI-26-175: Apple macOS ImageIO SGI File Parsing Out-Of-Bounds Read Information Disclosure VulnerabilityZero Day Initiative · Mar 10, 2026