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Microsoft released a security update for Microsoft Edge (Chromium-based) to remediate a high-severity remote code execution vulnerability tracked as CVE-2026-50521. According to the advisory, the flaw carries a CVSS score of 8.3 and could allow a remote attacker to execute arbitrary code over a network.
The vulnerability was described as having low attack complexity, requiring low privileges and no user interaction, increasing the urgency for enterprise remediation. Microsoft documented the fix in its Edge security release notes, and external defenders including EG-FinCIRT urged organizations to deploy the update promptly after standard testing to reduce exposure.
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Microsoft released a security update for Microsoft Edge (Chromium-based) on June 28, 2026 to fix CVE-2026-50521, a remote code execution vulnerability. The flaw was described as network-exploitable with low attack complexity, low privileges required, and no user interaction.
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Microsoft Edge (Chromium-based) has received fixes for multiple high-severity vulnerabilities, including remote code execution flaws `CVE-2026-58289`, `CVE-2026-58293`, `CVE-2026-58285`, `CVE-2026-58288`, `CVE-2026-57974`, `CVE-2026-58284`, `CVE-2026-58287`, `CVE-2026-57981`, and `CVE-2026-56645`, as well as the security feature bypass issue `CVE-2026-57983`. Public records attribute the issues to Microsoft and rate them from high to critical severity, with CVSS scores reaching **9.0** for `CVE-2026-58289` and several others scoring in the **8.1-8.8** range. Advisories from Microsoft and HKCERT indicate the flaws affect Microsoft Edge and require prompt patching through the browser's latest security updates. While some metadata inconsistently marks the bugs as not remotely exploitable, the listed attack characteristics for several entries include low attack complexity, no privileges required, and in many cases user interaction, making browser update compliance and rapid deployment a priority for enterprise defenders.
Jul 7, 2026
Microsoft has issued security advisories for a long-running series of **remote code execution** vulnerabilities affecting **Microsoft Edge (Chromium-based)**, with disclosures spanning multiple product update cycles. The referenced flaws include `CVE-2021-43221`, `CVE-2022-21929`, `CVE-2022-33636`, `CVE-2022-38012`, `CVE-2023-21775`, `CVE-2023-36008`, `CVE-2023-36022`, `CVE-2023-36034`, `CVE-2024-38210`, `CVE-2024-38219`, `CVE-2024-43496`, `CVE-2024-43578`, `CVE-2024-43596`, `CVE-2024-49023`, `CVE-2025-21408`, `CVE-2025-25000`, `CVE-2025-29834`, and `CVE-2025-60711`, all tracked by Microsoft as Edge RCE issues. The advisories indicate continued patching of browser-exposed attack surface in Edge, including several clusters of RCE fixes released on the same day, suggesting bundled security updates across versions. While the entries provided do not include technical synopses or exploitation details, the repeated publication of Edge RCE bulletins through Microsoft Update Guide and MSRC portal pages shows sustained remediation activity for code-execution bugs that could be triggered through malicious web content or browser processing components, reinforcing the need for rapid browser update deployment across enterprise fleets.
Jul 12, 2026
Microsoft has published Security Update Guide entries for two **Microsoft Edge (Chromium-based)** remote code execution flaws, **`CVE-2025-21342`** and **`CVE-2022-21931`**. Both advisories identify the same impact category—remote code execution in the browser—indicating that successful exploitation could allow malicious code to run in the context of the targeted Edge process. The disclosures show Microsoft continuing to track and remediate serious browser security issues affecting its Chromium-based Edge platform through formal update guidance. Organizations using Microsoft Edge should review the relevant Security Update Guide entries for affected versions and apply available browser updates promptly, as RCE flaws in web browsers can be triggered through malicious web content and pose a direct risk to enterprise endpoints.
Jul 12, 2026