Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
Priority LOW 23CWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from Microsoft.
Summary
Use after free in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00786 56th percentileScored 2026-11-07
Fix Fixed Microsoft Edge (Chromium-based) (Microsoft): 152.0.4191.53Microsoft Edge for Android (Microsoft): 152.0.4191.52+4 more productsRed Hat: 6 advisories
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Microsoft Edge (Chromium-based) | 1.0.0.0 to before 152.0.4191.53 | 152.0.4191.53 | Patch available | CNA |
| Microsoft | Microsoft Edge for Android | 1.0.0.0 to before 152.0.4191.52 | 152.0.4191.52 | Patch available | CNA |
| Microsoft | Microsoft Edge for iOS | 1.0.0.0 to before 152.0.4191.52 | 152.0.4191.52 | Patch available | CNA |
| Microsoft | Microsoft Edge for Linux | 1.0.0 to before 152.0.4191.52 | 152.0.4191.52 | Patch available | CNA |
| Microsoft | Microsoft Edge for MAC | 1.0.0.0 to before 152.0.4191.52 | 152.0.4191.52 | Patch available | CNA |
| Microsoft | Microsoft Edge for Windows | 1.0.0.0 to before 152.0.4191.52 | 152.0.4191.52 | Patch available | CNA |
- Microsoft Edge (Chromium-based) VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.53 Fixed in 152.0.4191.53 Patch available CNA
- Microsoft Edge for Android VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
- Microsoft Edge for iOS VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
- Microsoft Edge for Linux VendorMicrosoft Affected 1.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
- Microsoft Edge for MAC VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
- Microsoft Edge for Windows VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
Remediation
- Fix · CNA Microsoft Edge (Chromium-based) (Microsoft) Fixed in 152.0.4191.53
- Fix · CNA Microsoft Edge for Android (Microsoft) Fixed in 152.0.4191.52
- Fix · CNA Microsoft Edge for iOS (Microsoft) Fixed in 152.0.4191.52
- Fix · CNA Microsoft Edge for Linux (Microsoft) Fixed in 152.0.4191.52
- Fix · CNA Microsoft Edge for MAC (Microsoft) Fixed in 152.0.4191.52
- Fix · CNA Microsoft Edge for Windows (Microsoft) Fixed in 152.0.4191.52
Red Hat 6 advisories
- RHSA-2026:60391 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.16.4 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.16 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +19
- RHSA-2026:60390 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.13.11 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.13 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +23
- RHSA-2026:60388 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.14.4 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.14 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +26
Show 3 more Red Hat advisories
- RHSA-2026:60389 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.15.6 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.15 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9, registry.redhat.io/rhacm2/acm-must-gather-rhel9 +19
- RHSA-2026:60387 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.11.11 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.11 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-must-gather-rhel9, registry.redhat.io/rhacm2/acm-prometheus-config-reloader-rhel9 +24
- RHSA-2026:60386 Released 2026-08-26 · Red Hat rating ImportantRed Hat Advanced Cluster Management for Kubernetes v2.17.1 security update
- Red Hat Advanced Cluster Management for Kubernetes 2.17 registry.redhat.io/rhacm2/acm-governance-policy-addon-controller-rhel9, registry.redhat.io/rhacm2/acm-grafana-rhel9, registry.redhat.io/rhacm2/acm-multicluster-observability-addon-rhel9 +31
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Advanced Cluster Management for Kubernetes 2.11 | Fixed | RHSA-2026:60387 |
| Red Hat Advanced Cluster Management for Kubernetes 2.13 | Fixed | RHSA-2026:60390 |
| Red Hat Advanced Cluster Management for Kubernetes 2.14 | Fixed | RHSA-2026:60388 |
| Red Hat Advanced Cluster Management for Kubernetes 2.15 | Fixed | RHSA-2026:60389 |
| Red Hat Advanced Cluster Management for Kubernetes 2.16 | Fixed | RHSA-2026:60391 |
| Red Hat Advanced Cluster Management for Kubernetes 2.17 | Fixed | RHSA-2026:60386 |
Not affected: 6 products
- Red Hat Advanced Cluster Management for Kubernetes 2.11
- Red Hat Advanced Cluster Management for Kubernetes 2.13
- Red Hat Advanced Cluster Management for Kubernetes 2.14
- Red Hat Advanced Cluster Management for Kubernetes 2.15
- Red Hat Advanced Cluster Management for Kubernetes 2.16
- Red Hat Advanced Cluster Management for Kubernetes 2.17
Microsoft
Microsoft's page for this CVE →
- Impact
- Remote Code Execution
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation Unlikely
| Product | Status | Plan or fix |
|---|---|---|
| 6 | Affected | No update listed |
| Microsoft Edge for Android | Fixed | 152.0.4191.52 · Security Update |
| Microsoft Edge for Linux | Fixed | 152.0.4191.52 · Security Update |
| Microsoft Edge for MAC | Fixed | 152.0.4191.52 · Security Update |
| Microsoft Edge for Windows | Fixed | 152.0.4191.52 · Security Update |
| Microsoft Edge for iOS | Fixed | 152.0.4191.52 · Security Update |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-66798
- 2026-10-03 Alias added: GHSA-c27v-65fh-7pg2
- 2026-10-28 Fix available: Microsoft/Microsoft Edge (Chromium-based)@152.0.4191.53 · CNA
References
More Microsoft Edge Chromium vulnerabilities
- TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2022-03781 Out-of-bounds write in Google Chrome KEVCVSS 3.1CRITICAL 9.6
- TI-2025-12953 Memory corruption in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2025-04867 Out-of-bounds read in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2024-07384 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2026-66798 · CVE Program
- CVE-2026-66798 · NVD
- FIRST EPSS
- GHSA-c27v-65fh-7pg2 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-66798 · Microsoft Security Update Guide
- CVE-2026-66798 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences