CVE-2026-9956: Use after free in iOS

Published Apr 19, 2026
·
Updated

Chromium: CVE-2026-9956 Use after free in iOS

Other sources

This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.

— Microsoft

Use after free in iOS in Google Chrome on iOS prior to 148.0.7778.216 allowed a remote attacker who convinced a user to engage in specific UI gestures to execute arbitrary code via a crafted HTML page. (Chromium security severity: High)

— NVD

Credit

Google

Affected Software

6 affected componentsFixes available
Google Google Chrome for iOS<148.0.7778.216
Google Chrome<148.0.7778.216
148.0.7778.216
All of the following
Google Chrome<148.0.7778.216
Apple iPhone OS
Microsoft Edge (Chromium-based)
Patch available
Microsoft Edge<148.0.3967.97

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  2. Upgrade

    Upgrade Chromium-based Microsoft Edge (iOS) to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  3. Upgrade

    Upgrade Google Chrome on iOS to a version that resolves this vulnerability.

    Fixed in 148.0.7778.216
  4. Compensating control

    On iOS, mitigate exploitation of CVE-2026-9956 by preventing untrusted web content from being able to convince users to perform the specific UI gestures required by the use-after-free bug (e.g., restrict access to untrusted pages).

Event History

Apr 19, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
May 28, 2026
CVE Published
via MITRE·10:25 PM
Data Sourced
via MITRE·10:25 PM
DescriptionWeakness
Data Sourced
via NVD·11:16 PM
DescriptionSeverityWeaknessAffected Software
May 31, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software
Apr 28, 58520
Event
via FIRST·09:56 AM

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

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Frequently Asked Questions

1

What is the severity of CVE-2026-9956?

CVE-2026-9956 has a severity rating of high with a CVSS score of 7.5.

2

How do I fix CVE-2026-9956?

To fix CVE-2026-9956, update Google Chrome on iOS to version 148.0.7778.216 or later.

3

What impact does CVE-2026-9956 have?

CVE-2026-9956 can lead to a use after free vulnerability, potentially allowing an attacker to execute arbitrary code.

4

Which software is affected by CVE-2026-9956?

CVE-2026-9956 affects Google Chrome for iOS and Microsoft Edge (Chromium-based).

5

How does CVE-2026-9956 affect users?

Users of Google Chrome on iOS before the patch may be exposed to security risks due to a use after free vulnerability.

Company

Resources

Contact

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