CVE-2026-78891: Buffer overflow in WebRTC

Published Apr 15, 2026
·
Updated

Buffer overflow in WebRTC in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)

Other sources

Chromium: CVE-2026-78891 Buffer overflow in WebRTC

— Microsoft

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

Credit

ngrunbaum

Affected Software

5 affected componentsFixes available
Google Google Chrome<152.0.7977.65
Google Chrome<152.0.7977.64
152.0.7977.64
Google Chrome<152.0.7977.65
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/WebRTC to a version that resolves this vulnerability.

    Fixed in 152.0.7977.65
  4. Upgrade

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

    Fixed in 152.0.7977.65

Event History

Apr 15, 2026
CVE Published
12:00 AM
Data Sourced
12:00 AM
SeverityWeaknessAffected Software
Aug 25, 2026
CVE Published
via MITRE·08:10 PM
Data Sourced
via MITRE·08:10 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?

An attacker needs to get a user running an affected Chrome version to load a crafted HTML page. The disclosed impact is arbitrary code execution inside Chrome's sandbox.

2

Are current Chrome releases affected?

The vulnerability affects Google Chrome versions prior to 152.0.7977.65. Chrome 152.0.7977.65 and later are not identified as affected by the provided advisory.

3

What should be done if systems cannot be updated immediately?

The available information identifies crafted HTML content as the attack vector. Until Chrome can be updated, reduce exposure to untrusted web content and avoid opening suspicious pages in affected browsers.

Company

Resources

Contact

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