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Mallory
Low

Siri Auto-Answer Bypass on Locked iOS Devices

IdentifiersCVE-2024-40853CWE-284

A vulnerability in iOS and iPadOS prior to version 18 allowed an attacker to use Siri to enable the Auto-Answer Calls feature on a locked device. This could be exploited by someone with physical access to the device, bypassing intended security restrictions on locked devices.

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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.

An attacker with physical access to a locked iOS or iPadOS device could enable Auto-Answer Calls via Siri, potentially allowing them to answer incoming calls without unlocking the device, leading to unauthorized access to call audio and possible further exploitation.

Mitigation

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

Restrict physical access to devices and disable Siri access from the lock screen as a temporary mitigation until the device can be updated to a fixed version.

Remediation

Patch, then assume compromise.

Upgrade to iOS 18 or iPadOS 18, where the options available via Siri on a locked device have been restricted to prevent enabling Auto-Answer Calls.
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

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

ACTIVITY FEED

Recent activity

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

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.
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

Community discussion across Reddit, Mastodon, and other social sources.