CVE-2026-58289
Public exploit code is available. Proof-of-concept or working exploit code for CVE-2026-58289 is indexed in Exploit-DB. Expect opportunistic scanning and exploitation attempts — prioritize remediation even though it is not (yet) in the CISA KEV catalog.
An attacker can exploit multiple vulnerabilities in Microsoft Edge to gain elevated privileges, execute arbitrary code, bypass security measures, conduct spoofing and cross-site scripting attacks, disclose sensitive information, or trigger a denial-of-service condition.
CSIRTS triage
- What
- An attacker can exploit multiple vulnerabilities in Microsoft Edge to gain elevated privileges, execute arbitrary code, bypass security measures, conduct spoofing and cross-site scripting attacks, disclose sensitive information, or trigger a denial-of-service condition.
- Who is affected
- Users of Microsoft Edge across various deployments.
- Urgency
- Remediation is high urgency due to the wide range of potential impacts.
- Action
- Update Microsoft Edge to the latest version.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Moderate exploitation risk1.8% 30-day exploitation probability. Patch within normal cadence, watch for KEV listing. Riskier than 76% of all EPSS-scored CVEs.
Exploit availability
Public exploit or proof-of-concept code for CVE-2026-58289 is indexed in these free datasets. Available exploit code raises real-world risk independent of the CVSS score.
- Exploit-DBA public exploit is published in the Exploit-DB archive.look it up ↗
Advisory coverage (3)
- criticalCVE-2026-58289: Microsoft Edge (Chromium-based) Remote Code Execution Vulnerabilitymsrc · 2026-07-14
- high[NEW] [high] Microsoft Edge: Multiple vulnerabilitiescert-bund · 2026-07-09
- criticalCVE-2026-58289: Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-base…nvd · 2026-07-03
External references
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[](https://www.csirts.com/cve/CVE-2026-58289)