CVE-2026-113277 Google CVE debrief

Who should care

Defenders responsible for managing Google Chrome installations on Android devices should assess exposure and prioritize updating to version 156.0.8078.47 or later. This includes IT teams managing Android devices, security teams monitoring for potential exploitation attempts, and operators responsible for maintaining Google Chrome installations.

Why it matters

CVE-2026-113277 is an out-of-bounds read vulnerability in Google Chrome's CustomTabs on Android. Defenders should verify versions, update to 156.0.8078.47 or later, and monitor for potential exploitation attempts.

• Verify Android Chrome versions to determine exposure
• Update to version 156.0.8078.47 or later to prevent potential memory reads
• Monitor for potential exploitation attempts and anomalous activity

Technical summary

The CVE record describes an out-of-bounds read vulnerability in Google Chrome's CustomTabs on Android prior to version 156.0.8078.47. This vulnerability allowed a remote attacker to read memory inside the sandbox via a crafted HTML page. The vulnerability was reported by the Chromium security team with a medium severity rating. Defenders should prioritize verifying Android Chrome versions and updating to 156.0.8078.47 or later to prevent potential memory reads. The vulnerability impacts Android devices using Google Chrome's CustomTabs feature.

Defensive priority

Defenders should prioritize verifying Android Chrome versions and updating to 156.0.8078.47 or later.

Recommended defensive actions

• Verify Android Chrome versions and update to 156.0.8078.47 or later
• Review and implement secure coding practices to prevent out-of-bounds read vulnerabilities
• Monitor for potential exploitation attempts and anomalous activity
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and source item provide details on the vulnerability, including its description, affected versions, and references to additional information. Evidence is limited to public sources and CVE Program records. Defenders should verify Android Chrome versions and update to 156.0.8078.47 or later. The CVE record was published on 2026-10-20T21:02:24.146Z and has not been modified since then.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.