CVE-2026-58289

CRITICAL
Published Jul 3, 2026 Modified Jul 7, 2026 CWE-843

Description

Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network.

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CVSS v3.1 Score

9.0
CRITICAL
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0051
Probability of exploitation
0.41%
Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-843 CWE-843

Affected Products

Vendor Product
microsoft edge_chromium

References

Frequently Asked Questions

What is CVE-2026-58289? +
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network. It has a CVSS v3.1 base score of 9.0 (CRITICAL).
How severe is CVE-2026-58289? +
CVE-2026-58289 has a CVSS v3.1 score of 9.0 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately. The EPSS score is 0.0051, placing it in the 0th percentile for exploitation probability.
What products are affected by CVE-2026-58289? +
CVE-2026-58289 affects products from microsoft, specifically: edge_chromium. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2026-58289? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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