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CVE-2026-113121 Google CVE debrief

PatchSiren debrief for CVE-2026-113121: Memory corruption in ContextMenu in Google Chrome on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. This vulnerability impacts Android devices using Google Chrome, with potential operational impacts including remote code execution inside the sandbox. Defenders should assess exposure and prioritize updating to version 156.0.8078.47 or later. The CVE record and source item provide details on the memory corruption vulnerability in Google Chrome's ContextMenu on Android.

Vendor
Google
Product
Chrome
CVSS
Unknown
CISA KEV
Not listed in stored evidence
Original CVE published
2026-10-20
Original CVE updated
2026-10-20
Advisory published
2026-10-20
Advisory updated
2026-10-20

Who should care

Defenders responsible for managing Google Chrome on Android devices should assess exposure and prioritize updating to version 156.0.8078.47 or later. This includes security teams, IT administrators, and vulnerability management teams who oversee Google Chrome deployments on Android devices. They should review the CVE record and source item for details on the memory corruption vulnerability in Google Chrome's ContextMenu on Android and implement additional

Why it matters

Defenders should prioritize verifying and updating Google Chrome to version 156.0.8078.47 or later on Android devices to prevent potential remote code execution inside the sandbox.

  • Potential remote code execution inside the sandbox
  • Verification of Google Chrome version on Android devices
  • Implementation of additional security measures to prevent exploitation

Technical summary

Memory corruption in ContextMenu in Google Chrome on Android prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. The vulnerability is caused by a memory corruption issue in the ContextMenu component of Google Chrome on Android. This issue can be exploited by a remote attacker to potentially execute arbitrary code inside the sandbox. The vendor, Google, has provided information on the affected version and the fixed version. Defenders should prioritize verifying and updating Google Chrome to version 156.0.8078.47 or later on Android devices.

Defensive priority

Defenders should prioritize verifying and updating Google Chrome to version 156.0.8078.47 or later on Android devices.

Recommended defensive actions

  • Verify and update Google Chrome to version 156.0.8078.47 or later on Android devices
  • Monitor Google Chrome for any suspicious activity
  • Implement additional security measures to prevent exploitation
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review
  • Track exceptions, retest remediated assets, and close the item only after evidence is documented
  • Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the memory corruption vulnerability in Google Chrome's ContextMenu on Android. The vendor, Google, has provided information on the affected version and the fixed version.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-113121 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-113121

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-113121 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-113121

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

  • CVE-2026-113121

    Unverified legacy reference

    URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/113xxx/CVE-2026-113121.json

    cve_program_cvelist_v5

  • Source reference

    Unverified legacy reference

    URL: https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_02018666648.html

    Supplemental source

  • Source reference

    Unverified legacy reference

    URL: https://issues.chromium.org/issues/562909956

    Supplemental source

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.