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PatchSiren cyber security CVE debrief

CVE-2010-0806 Microsoft CVE debrief

This PatchSiren debrief is based on the supplied source corpus for CVE-2010-0806, a Use-After-Free Vulnerability in Microsoft Internet Explorer. The CVE record was published on 2026-05-20T00:00:00.000Z and has not been modified since then. Defenders responsible for Internet Explorer deployments, especially in environments where Internet Explorer is still in use, should assess exposure and apply mitigations. The vulnerability requires verification of exposure and application of mitigations to prevent exploitation. The CISA KEV catalog and CVE Program record provide limited information about this vulnerability. Further verification is needed to determine the actual impact and and a

Vendor
Microsoft
Product
Internet Explorer
CVSS
HIGH 8.8
CISA KEV
Listed
Original CVE published
2026-05-20
Original CVE updated
2026-05-20
Advisory published
2026-05-20
Advisory updated
2026-05-20

Who should care

Defenders responsible for Internet Explorer deployments, especially in environments where Internet Explorer is still in use, should assess exposure and apply mitigations.

Why it matters

CVE-2010-0806 is a Use-After-Free Vulnerability in Microsoft Internet Explorer that requires verification of exposure and application of mitigations to prevent exploitation.

  • Verify exposure and potential compromise of Internet Explorer users
  • Apply mitigations to prevent exploitation
  • Monitor for suspicious activity related to this vulnerability

Technical summary

CVE-2010-0806 is a Use-After-Free Vulnerability in Microsoft Internet Explorer. The vulnerability was publicly disclosed and added to the CISA KEV catalog on 2026-05-20. This vulnerability affects Internet Explorer users and requires verification of exposure and application of mitigations to prevent exploitation. The official CVE Program record and NVD detail page provide source-provided CVE metadata and vulnerability assessment.

Defensive priority

Defenders should prioritize verifying exposure and applying mitigations for Internet Explorer users, especially in environments where Internet Explorer is still in use.

Recommended defensive actions

  • Verify Internet Explorer usage and exposure in your environment
  • Apply mitigations per vendor instructions
  • Follow applicable BOD 22-01 guidance for cloud services

Evidence notes

The CISA KEV catalog and CVE Program record provide limited information about this vulnerability. Further verification is needed to determine the actual impact and affected versions.

Sources and references

Verified primary and authoritative sources

  • CVE-2010-0806 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2010-0806

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

  • CVE-2010-0806 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2010-0806

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

  • CISA Known Exploited Vulnerabilities catalog

    Publisher, destination, and source semantics verified

    URL: https://www.cisa.gov/known-exploited-vulnerabilities-catalog

    Cybersecurity and Infrastructure Security Agency - Official CISA catalog of vulnerabilities known to be exploited in the wild.

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.