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PatchSiren cyber security CVE debrief

CVE-2026-58293 Microsoft CVE debrief

AI-assisted PatchSiren debrief based on the supplied source corpus. The CVE record was published on 2026-07-03T21:17:04.143Z and has not been modified since then. The NVD entry is currently Undergoing Analysis. This HIGH severity vulnerability in Microsoft Edge (Chromium-based) allows an unauthorized attacker to execute code over a network due to external control of file name or path. The CVSS score is 8.1, indicating a high severity vulnerability. Security teams responsible for Microsoft Edge (Chromium-based) deployments should assess and prioritize patching.

Vendor
Microsoft
Product
Microsoft Edge (Chromium-based)
CVSS
HIGH 8.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-07-03
Original CVE updated
2026-07-07
Advisory published
2026-07-03
Advisory updated
2026-07-07

Who should care

Security teams responsible for Microsoft Edge (Chromium-based) deployments should assess and prioritize patching for this HIGH severity vulnerability. Additionally, operators and administrators of Microsoft Edge (Chromium-based) should review the official CVE record and NVD entry for the latest information and verify their deployments.

Technical summary

CVE-2026-58293 is a HIGH severity vulnerability in Microsoft Edge (Chromium-based) with a CVSS score of 8.1. The vulnerability allows an unauthorized attacker to execute code over a network due to external control of file name or path. This vulnerability is particularly concerning because it can be exploited over a network, making it a high priority for patching. Microsoft Edge (Chromium-based) deployments are affected, and security teams should verify the official CVE record and NVD entry for the latest information.

Defensive priority

Patching is recommended as a top priority due to the HIGH severity and potential for code execution.

Recommended defensive actions

  • Apply the official patch from Microsoft
  • Verify and update Microsoft Edge (Chromium-based) deployments
  • Monitor for potential exploitation attempts
  • Review compensating controls for exposed systems while remediation is scheduled and verified
  • Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide initial details. Further analysis and verification are needed due to limited information. The vulnerability allows an unauthorized attacker to execute code over a network due to external control of file name or path in Microsoft Edge (Chromium-based). Security teams should verify the official CVE record and NVD entry for the latest information. The NVD entry is currently Undergoing Analysis. Additional verification tasks include reviewing Microsoft Edge (Chromium-based) deployments and monitoring for potential exploitation attempts.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-58293 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-58293

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-58293 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-58293

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.