Medium

Unexpected app termination in Apple Vision file parsing

IdentifiersCVE-2026-20657CWE-399

CVE-2026-20657 is a memory-handling vulnerability in Apple's Vision component. Apple states that parsing a maliciously crafted file may lead to unexpected app termination. The issue was addressed through improved memory handling and affects Apple platforms including iOS 18.7.7, iPadOS 18.7.7, macOS Sequoia 15.7.5, and macOS Sonoma 14.8.5. The available information does not identify the specific vulnerable function or file format parser.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can cause the targeted application or process handling the crafted file to terminate unexpectedly, resulting in a denial-of-service condition for that app. Based on the provided information, there is no evidence that this issue enables code execution, privilege escalation, or data disclosure.

Mitigation

If you can’t patch tonight, do this now.

Until patches can be applied, reduce exposure by avoiding opening or processing untrusted files with applications or workflows that invoke the Vision component. Where feasible, restrict ingestion of externally supplied files from untrusted sources. No vendor-specific workaround beyond updating is provided in the supplied content.

Remediation

Patch, then assume compromise.

Apply the vendor-provided updates that fix the issue: iOS 18.7.7, iPadOS 18.7.7, macOS Sequoia 15.7.5, or macOS Sonoma 14.8.5, as applicable. Apple states the issue was resolved with improved memory handling.

PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType

AppleIosoperating_system

AppleIpadosoperating_system

AppleIphone Osoperating_system

AppleMacosoperating_system

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

6 SOURCESView more in app

apple supportNews

Apr 1, 2026

About the security content of iOS 18.7.7 and iPadOS 18.7.7 - Apple Support

A memory-handling issue that may cause unexpected app termination when parsing a maliciously crafted file.

apple supportNews

Mar 24, 2026

About the security content of macOS Sequoia 15.7.5 - Apple Support (CA)

A macOS Sequoia memory handling issue that could lead to unexpected app termination when parsing a maliciously crafted file.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.

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Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity4