CVE-2024-21326
CVE-2024-21326 is a critical-severity vulnerability in Microsoft Edge Chromium with a CVSS 3.x base score of 9.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.
Key facts
- Severity: Critical (CVSS 3.x base score 9.6)
- EPSS exploit prediction: 1% (65th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2024-19038
- Weakness: CWE-416
- Affected product: Microsoft Edge Chromium
- Published:
- Last modified:
Description
Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
Frequently asked questions
- What is CVE-2024-21326?
- Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- How severe is CVE-2024-21326?
- CVE-2024-21326 has a CVSS 3.x base score of 9.6, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2024-21326 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2024-21326?
- CVE-2024-21326 affects Microsoft Edge Chromium. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2024-21326?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- Does CVE-2024-21326 have an EU (EUVD) identifier?
- Yes. CVE-2024-21326 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2024-19038.
- When was CVE-2024-21326 published?
- CVE-2024-21326 was published on 2024-01-26 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:*:*:*:*
More vulnerabilities in Microsoft Edge Chromium
- CVE-2023-35618 — Critical (CVSS 9.6): Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2023-6345 — Critical (CVSS 9.6): Integer overflow in Skia in Google Chrome prior to 119.0.6045.199 allowed a remote attacker who had compromised the…
- CVE-2023-36735 — Critical (CVSS 9.6): Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
- CVE-2022-4135 — Critical (CVSS 9.6): Heap buffer overflow in GPU in Google Chrome prior to 107.0.5304.121 allowed a remote attacker who had compromised the…
- CVE-2022-33649 — Critical (CVSS 9.6): Microsoft Edge (Chromium-based) Security Feature Bypass Vulnerability
- CVE-2021-21132 — Critical (CVSS 9.6): Inappropriate implementation in DevTools in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to…
All CVEs affecting Microsoft Edge Chromium →
Other CWE-416 (Use After Free) vulnerabilities
- CVE-2026-13782 — Critical (CVSS 10.0): Use after free in Browser in Google Chrome prior to 150.0.7871.47 allowed a remote attacker who had compromised the…
- CVE-2026-4725 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 149…
- CVE-2026-4688 — Critical (CVSS 10.0): Sandbox escape due to use-after-free in the Disability Access APIs component. This vulnerability was fixed in Firefox…
- CVE-2025-24085 — Critical (CVSS 10.0): A use after free issue was addressed with improved memory management. This issue is fixed in iOS 18.3 and iPadOS 18.3,…
- CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
- CVE-2021-32495 — Critical (CVSS 10.0): Radare2 has a use-after-free vulnerability in pyc parser's get_none_object function. Attacker can read freed memory…