CVE-2026-13915 Overview
CVE-2026-13915 is a use-after-free vulnerability in Google Chrome for iOS versions prior to 150.0.7871.47. A remote attacker can exploit heap corruption by convincing a user to perform specific UI gestures on a crafted HTML page. The flaw is classified under CWE-416: Use After Free and Chromium rates its internal security severity as Medium, while the National Vulnerability Database assigns a higher score due to the potential impact on confidentiality, integrity, and availability.
Critical Impact
Successful exploitation allows a remote attacker to trigger heap corruption in Chrome for iOS, potentially leading to arbitrary code execution within the browser process after minimal user interaction.
Affected Products
- Google Chrome for iOS versions prior to 150.0.7871.47
- iOS devices running vulnerable Chrome builds
- Applications embedding vulnerable Chrome for iOS components
Discovery Timeline
- 2026-06-30 - CVE-2026-13915 published to the National Vulnerability Database
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-13915
Vulnerability Analysis
The vulnerability is a use-after-free condition in Chrome for iOS. Use-after-free bugs occur when a program continues to reference heap memory after that memory has been freed. When the freed region is reallocated with attacker-influenced data, dereferencing the stale pointer can corrupt heap metadata or hijack control flow.
Exploitation requires the target user to engage in specific UI gestures on a crafted HTML page. This interaction step raises the barrier to mass exploitation but remains achievable through social engineering, malvertising, or compromised sites. The Exploit Prediction Scoring System places this issue in the lower probability range for near-term exploitation.
Root Cause
The root cause is improper object lifetime management within Chrome for iOS rendering or UI code paths. An object is released while another code path retains and later dereferences a pointer to the freed memory. Combined with heap allocator behavior, this allows an attacker to place controlled data at the freed location and trigger heap corruption during subsequent use.
Attack Vector
The attack vector is network-based. An attacker hosts a crafted HTML page and lures a user with a vulnerable Chrome for iOS build to visit it. The page must induce the victim to perform particular UI gestures that drive the vulnerable code path. Once heap corruption occurs, the attacker can pursue further browser compromise. Refer to the Chromium Issue Tracker Entry and the Chrome Stable Channel Update for vendor-provided technical context.
Detection Methods for CVE-2026-13915
Indicators of Compromise
- Unexpected Chrome for iOS process crashes or renderer termination shortly after visiting an untrusted site
- Outbound connections from mobile endpoints to newly registered or low-reputation domains hosting HTML payloads
- Anomalous mobile browsing telemetry showing pages that solicit unusual user gestures such as long-press or multi-touch sequences
Detection Strategies
- Inventory Chrome for iOS installations and flag any build earlier than 150.0.7871.47 as vulnerable
- Correlate URL reputation telemetry with mobile browser crash events to identify potential exploitation attempts
- Monitor mobile device management (MDM) reports for outdated Chrome versions that do not receive App Store updates
Monitoring Recommendations
- Ingest mobile browser and MDM logs into a central analytics platform to track Chrome for iOS version drift
- Alert on repeated Chrome renderer crashes on the same device within short windows
- Track access to threat-intelligence-flagged domains from managed iOS devices
How to Mitigate CVE-2026-13915
Immediate Actions Required
- Update Google Chrome for iOS to version 150.0.7871.47 or later through the Apple App Store
- Enforce automatic App Store updates via MDM policy on managed iOS fleets
- Instruct users to avoid clicking links from untrusted sources until updates are confirmed
Patch Information
Google addressed the vulnerability in Chrome for iOS 150.0.7871.47. Details are published in the Chrome Stable Channel Update. The corresponding Chromium bug is tracked in the Chromium Issue Tracker Entry. Apply the update through the App Store; no separate binary patch is distributed for iOS builds.
Workarounds
- Use an alternate updated browser on iOS until Chrome is patched on the device
- Restrict browsing to trusted domains through MDM-enforced content filtering
- Disable JavaScript for untrusted sites where feasible to reduce the attack surface
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
