CVE-2026-78964: Use after free in Sync

Published Jul 27, 2026
·
Updated

Chromium: CVE-2026-78964 Use after free in Sync

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 Sync in Google Chrome on on iOS prior to 152.0.7977.65 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Low)

— NVD

Credit

Google

Affected Software

6 affected componentsFixes available
Google Google Chrome<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64
All of the following
Google Chrome<152.0.7977.65
Apple iPhone OS
Microsoft Edge<152.0.4191.53
Microsoft Edge (Chromium-based)<152.0.4191.53
152.0.4191.53

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 152.0.7977.64
  2. Upgrade

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

    Fixed in 152.0.4191.53
  3. Upgrade

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

    Fixed in 152.0.7977.65

Event History

Jul 27, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Aug 25, 2026
CVE Published
via MITRE·08:11 PM
Data Sourced
via MITRE·08:11 PM
DescriptionWeakness
Data Sourced
via NVD·09:17 PM
DescriptionSeverityWeaknessAffected Software
Aug 28, 2026
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What does an attacker need to exploit this issue?

The attacker would need to get a user running an affected Chrome for iOS version to load a crafted HTML page. The issue is described as remotely exploitable and may allow arbitrary code execution outside the sandbox.

2

Which Chrome for iOS versions are affected?

Chrome on iOS versions earlier than 152.0.7977.65 are affected. Updating to 152.0.7977.65 or later addresses the affected version range.

Company

Resources

Contact

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