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PatchSiren cyber security CVE debrief

CVE-2012-4792 Microsoft CVE debrief

CVE-2012-4792 is a Microsoft Internet Explorer use-after-free vulnerability that CISA added to its Known Exploited Vulnerabilities catalog on 2024-07-23. CISA’s note says the impacted product is end-of-life and should be disconnected if still in use, so defenders should treat any remaining Internet Explorer exposure as a legacy-risk issue that needs removal or isolation rather than routine patching.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2024-07-23
Original CVE updated
2024-07-23
Advisory published
2024-07-23
Advisory updated
2024-07-23

Who should care

Security teams, endpoint administrators, and asset owners responsible for any systems that still rely on Microsoft Internet Explorer, especially legacy environments that cannot immediately remove it.

Technical summary

The supplied record identifies the flaw as a use-after-free issue in Microsoft Internet Explorer. The CISA KEV listing indicates it is known to be exploited, but the corpus provided here does not include a CVSS score or deeper technical detail.

Defensive priority

Immediate. Because CISA lists the CVE in KEV and describes the impacted product as end-of-life, any remaining Internet Explorer usage should be treated as urgent exposure reduction work.

Recommended defensive actions

  • Identify any systems, applications, or workflows that still require Microsoft Internet Explorer.
  • Disconnect or isolate impacted systems if Internet Explorer is still in use, per CISA’s required action.
  • Remove or disable Internet Explorer where operationally possible.
  • Migrate users and business processes to supported browsers or alternatives.
  • Confirm that legacy systems are not exposed to the internet or other untrusted networks.
  • Track remediation against the CISA KEV due date guidance and document any unavoidable exceptions.

Evidence notes

CISA’s Known Exploited Vulnerabilities entry for this CVE lists Microsoft Internet Explorer, notes that the product is end-of-life, and states that it should be disconnected if still in use. The supplied record also includes the CVE and NVD reference pages, but no CVSS score or additional vendor advisory text.

Sources and references

Verified primary and authoritative sources

  • CVE-2012-4792 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2012-4792

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

  • CVE-2012-4792 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2012-4792

    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

  • Source item URL

    Unverified legacy reference

    URL: https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

    cisa_kev

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.