CVE-2026-58283
CVE-2026-58283 is a high-severity vulnerability in Microsoft Edge Chromium with a CVSS 3.x base score of 8.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-843.
Key facts
- Severity: High (CVSS 3.x base score 8.1)
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-843
- Affected product: Microsoft Edge Chromium
- Published:
- Last modified:
Description
Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
Frequently asked questions
- What is CVE-2026-58283?
- Access of resource using incompatible type ('type confusion') in Microsoft Edge (Chromium-based) allows an unauthorized attacker to perform spoofing over a network.
- How severe is CVE-2026-58283?
- CVE-2026-58283 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity high, and availability low.
- Is CVE-2026-58283 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-58283?
- CVE-2026-58283 affects Microsoft Edge Chromium. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-58283?
- 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-2026-58283 published?
- CVE-2026-58283 was published on 2026-07-03 and last updated on 2026-07-06.
References
Affected products (1)
- cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:*
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- CVE-2026-43038 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: ipv6: icmp: clear skb2->cb[] in…
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