How severe is CVE-2019-0566?

CVE-2019-0566 has a CVSS 3.x base score of 8.8, rated high 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-2019-0566 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-0566?

CVE-2019-0566 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-0566?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2019-0566 published?

CVE-2019-0566 was published on 2019-01-08 and last updated on 2026-06-17.

CVE-2019-0566

CVE-2019-0566 is a high-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 8.8. Its EPSS exploit-prediction score of 19% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-862.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 19% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-862
Affected product: Microsoft Edge
Published: 2019-01-08
Last modified: 2026-06-17

Description

An elevation of privilege vulnerability exists in Microsoft Edge Browser Broker COM object, aka "Microsoft Edge Elevation of Privilege Vulnerability." This affects Microsoft Edge.

Frequently asked questions

What is CVE-2019-0566?: An elevation of privilege vulnerability exists in Microsoft Edge Browser Broker COM object, aka "Microsoft Edge Elevation of Privilege Vulnerability." This affects Microsoft Edge.
How severe is CVE-2019-0566?: CVE-2019-0566 has a CVSS 3.x base score of 8.8, rated high 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-2019-0566 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 19% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-0566?: CVE-2019-0566 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-0566?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2019-0566 published?: CVE-2019-0566 was published on 2019-01-08 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Edge

CVE-2017-0028 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Microsoft scripting engine improperly accesses objects in memory. The…
CVE-2017-0252 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2017-0223 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2015-0313 — Critical (CVSS 9.8): Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows…
CVE-2015-0311 — Critical (CVSS 9.8): Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on…
CVE-2024-7971 — Critical (CVSS 9.6): Type confusion in V8 in Google Chrome prior to 128.0.6613.84 allowed a remote attacker to exploit heap corruption via a…

All CVEs affecting Microsoft Edge →

Other CWE-862 (Missing Authorization) vulnerabilities

CVE-2026-0092 — Critical (CVSS 10.0): In Package Manager, there is a possible device lock controller bypass due to a missing permission check. This could…
CVE-2026-33712 — Critical (CVSS 10.0): Typebot is a chatbot builder tool. In versions 3.15.2 and prior, the preview chat endpoint (POST…
CVE-2026-2031 — Critical (CVSS 10.0): An Improper Access Control vulnerability in several internal API endpoints for Google Cloud Application Integration…
CVE-2026-34976 — Critical (CVSS 10.0): Dgraph is an open source distributed GraphQL database. Prior to 25.3.1, the restoreTenant admin mutation is missing…
CVE-2025-30416 — Critical (CVSS 10.0): Sensitive data disclosure and manipulation due to missing authorization. The following products are affected: Acronis…
CVE-2025-45854 — Critical (CVSS 10.0): /server/executeExec of JEHC-BPM 2.0.1 allows attackers to execute arbitrary code via execParams.

Browse all CWE-862 (Missing Authorization) vulnerabilities →