Medium

Sensitive information disclosure in Apple WebKit web content processing

IdentifiersCVE-2023-38133CWE-200

CVE-2023-38133 is an Apple vulnerability affecting iOS 15.7.8 and iPadOS 15.7.8, iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Ventura 13.5, Safari 16.6, and watchOS 9.6. Apple states that the issue was addressed with improved checks and that processing web content may disclose sensitive information. Based on the advisory text, the flaw is in web content processing, likely within Safari/WebKit-related handling, and can result in unintended exposure of sensitive information during rendering or processing of attacker-influenced web content. The specific vulnerable function or code path is not provided in the supplied content.

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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 may allow disclosure of sensitive information to an attacker via crafted web content. The provided content does not specify the exact data types exposed, scope of disclosure, or whether code execution is possible; the stated impact is limited to information disclosure.

Mitigation

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

Until patches can be applied, reduce exposure to untrusted web content by limiting browsing to trusted sites, using managed browser controls where available, and restricting use of affected Apple devices and Safari/WebKit-based content rendering in high-risk environments. Because the issue is triggered by processing web content, minimizing interaction with attacker-controlled or untrusted websites may reduce risk, but patching is the primary mitigation.

Remediation

Patch, then assume compromise.

Apply the vendor fixes provided by Apple. The issue is fixed in iOS 15.7.8 and iPadOS 15.7.8, iOS 16.6 and iPadOS 16.6, tvOS 16.6, macOS Ventura 13.5, Safari 16.6, and watchOS 9.6. Systems running affected earlier versions should be updated to the corresponding fixed release.

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

AppleIpadosoperating_system

AppleIphone Osoperating_system

AppleMacosoperating_system

AppleSafariapplication

AppleTvosoperating_system

AppleWatchosoperating_system

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

ACTIVITY FEED

Recent activity

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

2 SOURCESView more in app

apple supportNews

Jan 25, 2026

About the security content of iOS 16.6 and iPadOS 16.6 - Apple Support

Unknown (CVE referenced without technical description in the provided content).

apple supportNews

Jan 19, 2026

Informazioni sui contenuti di sicurezza di iOS 16.6 e iPadOS 16.6 - Supporto Apple (IT)

Vulnerabilità Apple (dettagli tecnici non specificati nel testo) corretta tramite aggiornamento di sicurezza.

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 activity