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PatchSiren cyber security CVE debrief

CVE-2014-4123 Microsoft CVE debrief

CVE-2014-4123 is a Microsoft Internet Explorer privilege escalation vulnerability that CISA added to its Known Exploited Vulnerabilities (KEV) catalog on 2022-05-25. Because CISA marks it as known exploited, defenders should treat it as urgent and follow vendor remediation guidance promptly. The KEV entry lists a due date of 2022-06-15 and directs organizations to apply updates per vendor instructions.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-05-25
Original CVE updated
2022-05-25
Advisory published
2022-05-25
Advisory updated
2022-05-25

Who should care

Security teams, Windows and endpoint administrators, and any organization that still has Internet Explorer present on managed systems should review this CVE. It is especially important for environments that track CISA KEV items for patch prioritization.

Technical summary

The provided corpus identifies the issue as a Microsoft Internet Explorer privilege escalation vulnerability. CISA's KEV catalog records it as known exploited and directs defenders to apply updates per vendor instructions. No additional technical details, impact specifics, or CVSS data were provided in the supplied sources.

Defensive priority

High. CISA KEV inclusion indicates known exploitation, so remediation should be prioritized ahead of routine patch work and completed by the KEV due date when possible.

Recommended defensive actions

  • Apply Microsoft updates or other vendor-directed remediation for Internet Explorer systems as instructed.
  • Inventory systems and configurations that still include Internet Explorer exposure.
  • Prioritize affected endpoints and any internet-facing or high-value systems in patch queues.
  • Verify remediation by confirming the CVE is no longer present in your vulnerability management and compliance reports.
  • Track this item against the CISA KEV catalog until remediation is complete.

Evidence notes

This debrief is based only on the supplied CISA KEV source item and the official record links provided. The source metadata names Microsoft Internet Explorer, marks the vulnerability as known exploited, and specifies the action 'Apply updates per vendor instructions.' The corpus did not include CVSS scoring, detailed impact analysis, or exploit methodology, so those details are intentionally omitted.

Sources and references

Verified primary and authoritative sources

  • CVE-2014-4123 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2014-4123

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

  • CVE-2014-4123 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2014-4123

    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.