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Microsoft has published Security Update Guide entries for multiple Microsoft Edge (Chromium-based) elevation of privilege vulnerabilities, including CVE-2022-30127, CVE-2023-36027, and CVE-2024-21388. The advisories indicate that separate privilege-escalation issues have been identified in the browser across multiple release cycles, reinforcing Edge as a recurring target for flaws that could allow an attacker to gain higher privileges on an affected system.
While the referenced advisories provide limited public technical detail, the affected product and vulnerability class are consistent across all entries: Elevation of Privilege in Chromium-based Edge. Organizations using Microsoft Edge should review the corresponding Security Update Guide records, verify that browser updates have been applied across endpoints, and prioritize remediation because privilege-escalation bugs can increase the impact of other compromises by helping attackers move from initial code execution or user-level access to more powerful system permissions.
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3 events from the most recent confirmed update back to the earliest known activity.
Microsoft released a Security Update Guide entry for CVE-2024-21388, an elevation of privilege vulnerability affecting Microsoft Edge (Chromium-based).
Microsoft published Security Update Guide entries for CVE-2023-36027, describing an elevation of privilege vulnerability in Microsoft Edge (Chromium-based). The portal and product advisory references reflect the same disclosure event.
Microsoft released a Security Update Guide entry for CVE-2022-30127, an elevation of privilege vulnerability affecting Microsoft Edge (Chromium-based).
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Microsoft disclosed **CVE-2026-42838**, an elevation of privilege flaw in Chromium-based **Microsoft Edge** caused by improper neutralization of special elements in output used by a downstream component (`CWE-74`). The company rated the issue **Moderate** with a **CVSS 3.1 score of 5.4**, stating that exploitation requires user interaction, can be launched over the network with low attack complexity, and would give an attacker the same rights as the user running the browser. Microsoft said the vulnerability was **not publicly disclosed**, **not exploited in the wild**, and **less likely to be exploited** at the time of publication. A fix was released in **Microsoft Edge version 148.0.3967.55**, based on **Chromium 148.0.7778.97**. The disclosure follows a long pattern of Microsoft Edge privilege-escalation advisories, including earlier CVEs such as `CVE-2022-26895`, `CVE-2022-23262`, `CVE-2022-26908`, `CVE-2022-26894`, `CVE-2022-26900`, `CVE-2022-44708`, `CVE-2022-21954`, `CVE-2022-21970`, `CVE-2021-34475`, `CVE-2022-33680`, and `CVE-2022-26909`, underscoring the recurring need to keep Edge updated to the latest security release.
Jun 29, 2026
Microsoft has published security advisories for a series of **Microsoft Edge (Chromium-based) information disclosure vulnerabilities** affecting the browser across multiple release cycles. The referenced issues include `CVE-2021-36929`, `CVE-2023-33145`, `CVE-2023-36880`, `CVE-2023-38158`, `CVE-2024-21423`, `CVE-2024-29987`, `CVE-2024-30056`, `CVE-2024-38103`, `CVE-2024-38222`, `CVE-2024-49025`, and `CVE-2025-49741`, all listed by Microsoft as information disclosure vulnerabilities in the Chromium-based Edge browser. The advisories provide limited public detail, but the volume and recurrence of these CVEs show an ongoing stream of browser security fixes tied to unintended exposure of sensitive information. For defenders, the immediate takeaway is to ensure **Microsoft Edge is kept fully updated** and to track MSRC guidance for affected versions, as browser-based information disclosure bugs can aid reconnaissance, weaken privacy protections, or support follow-on exploitation when chained with other vulnerabilities.
Jul 8, 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 8, 2026