How do you patch or mitigate CVE-2023-7024 (Google Chromium WebRTC Heap Buffer Overflow)?

By NHI Mgmt Group Editorial Team Updated October 19, 2026 Domain: Threats, Abuse & Incident Response

CISA's required action for CVE-2023-7024 is to apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. In practice, find every instance of Google Chromium WebRTC in your estate, apply the vendor security update or documented mitigation, and if no fix can be applied, remove internet exposure or take the product out of service.

What you need to fix first in Chromium WebRTC

The practical starting point is asset discovery, because patching only works if you know where Chromium is embedded and where WebRTC is exposed through browsers, apps, or bundled runtimes. A browser vulnerability can still matter across managed desktops, kiosk systems, VDI images, and products that ship their own Chromium build. Treat the browser engine as software inventory, not just a user-facing application.

For Chrome and other Chromium-based products, NIST National Vulnerability Database is the right place to verify the record and map the issue to the software you actually run, while the CVE Program is the authoritative record for the vulnerability identifier itself.

Because WebRTC is used inside a browser and inside browser-adjacent products, the immediate question is not just “is Chrome updated?” but “is every Chromium-based endpoint, wrapper application, and managed browser channel on a fixed build or documented mitigation path?” That is the difference between a patch that exists in theory and a risk reduction that actually reaches users.

How to apply the vendor fix or the documented mitigation

The cleanest remediation is to move every affected instance to the vendor security update that contains the fix. Where the vendor cannot provide a timely update, use the documented mitigation exactly as provided, because CISA's action for this class of issue is mitigation per vendor instructions or discontinuing use if mitigation is unavailable. If the product cannot be brought into a safe state, remove it from service rather than keeping an exposed build online.

For prioritisation, use the vulnerability-management workflow that ties together exposure, exploitability, and remediation status. NHIMG's Vulnerability Management Guide is useful here because the decision is not only whether a patch exists, but whether you can confirm deployment, verify coverage, and track exceptions until the affected estate is fully addressed.

If the browser is part of a larger platform image, update the base image, rebuild any golden image, and redeploy managed endpoints rather than relying on manual user updates. For enterprise browser fleets, the remediation target is fleet-wide consistency, not isolated success on a few endpoints.

What to do when patching must wait

When immediate patching is not possible, reduce the attack surface as much as possible. That means removing internet exposure where practical, restricting use to trusted users and networks, and disabling or removing the product if you cannot obtain a defensible mitigation. For browser-based issues, compensate with tighter policy control, shorter update cycles, and stronger containment around the endpoints that must remain in use.

NHIMG's Enterprise Browser and Browser Security Guide is relevant because browser hardening, managed policies, isolation, and extension control are the practical controls that limit blast radius while a fix is rolling out.

Do not treat “mitigated” as the same thing as “safe” unless the mitigation is explicit, tested, and still effective in your environment. If the workaround depends on user behaviour or informal process, assume it will fail at scale.

Risk and Threat Considerations

Heap buffer overflow flaws in browser components matter because they can convert ordinary content handling into memory corruption, which in turn can lead to code execution, crash-induced denial of service, or a broader foothold depending on the exploit chain. With a browser and WebRTC, the risk is amplified by the fact that the vulnerable component sits close to a high-trust, internet-facing attack surface.

Failure mechanism: An attacker triggers malformed input through the vulnerable WebRTC code path, corrupts process memory, and may gain execution within the browser context or force repeated crashes that degrade availability.

Impact: Successful exploitation can expose users to compromise of the browser session, access to local data reachable from that process, and a wider enterprise problem if the same vulnerable build is deployed broadly across managed endpoints.

Standards & Framework Alignment

This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.

CIS Controls v8, NIST CSF 2.0, NIST SP 800-53 Rev 5 and OWASP ASVS set the governance and control requirements practitioners need to meet.

Framework	Control / Reference	Relevance
CIS Controls v8	CIS-7 — Continuous Vulnerability Management	Browser CVE remediation depends on tracking exposure and fixing vulnerable software quickly.
Recommendation — Prioritise and verify remediation of the affected Chromium builds across the estate.
NIST CSF 2.0	PR.IP-12 — Vulnerability management is performed	This issue requires identifying, patching, or mitigating vulnerable software across endpoints.
	PR.DS-7 — Integrity of data is protected	Browser exploitation can compromise local session and application integrity through memory corruption.
Recommendation — Track the vulnerable Chromium instances and close the remediation gap. Harden browser endpoints so exploitation has less room to alter trusted execution.
NIST SP 800-53 Rev 5	SI-2 — Flaw Remediation	Applying vendor fixes or mitigations is the core control response to this CVE.
Recommendation — Deploy the vendor fix or approved mitigation and document any exception.
OWASP ASVS	V15 — Secure Coding and Architecture	Heap buffer overflows are memory-safety failures tied to secure implementation discipline.
Recommendation — Use memory-safe coding and review practices to prevent similar overflow defects.

Practitioner Guidance

What to verify: Confirm the exact Chromium-derived product, the deployed build number, and whether the vulnerable WebRTC component is present in every channel or packaging variant you operate. Do not assume a desktop browser and an embedded browser wrapper are updated together.

Escalation / exception: If a product cannot be patched quickly, treat continued internet exposure as an exception that needs explicit approval, a deadline, and compensating controls. If no effective mitigation exists, remove the product from service rather than extending the exception.

What good looks like: Every affected system is either on the fixed vendor release, operating under a documented mitigation that has been verified in your environment, or isolated from exposure until remediation is complete.

Practitioner takeaway: For browser CVEs, the real control is verified fleet coverage, not the existence of a patch notice, because unpatched Chromium components often persist in embedded products long after the headline browser is updated.

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NHIMG Editorial Note
Reviewed and updated by the NHIMG editorial team on October 19, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org