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PatchSiren cyber security CVE debrief

CVE-2012-4969 Microsoft CVE debrief

CVE-2012-4969 is a Microsoft Internet Explorer use-after-free vulnerability that CISA has placed in its Known Exploited Vulnerabilities catalog. The supplied corpus does not include a CVSS score or vendor advisory details, but the KEV listing means defenders should treat it as active-risk exposure and prioritize remediation using Microsoft’s guidance.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2022-06-08
Original CVE updated
2022-06-08
Advisory published
2022-06-08
Advisory updated
2022-06-08

Who should care

Security and IT teams responsible for Windows endpoints, legacy Internet Explorer dependencies, enterprise browser management, and vulnerability remediation. This is especially important for environments that still allow Internet Explorer use or rely on IE compatibility for internal applications.

Technical summary

The available source corpus identifies this issue only at a high level as a Microsoft Internet Explorer use-after-free vulnerability. CISA’s KEV entry confirms known exploitation and directs affected organizations to apply updates per vendor instructions. No further impact, attack preconditions, or severity metrics are provided in the supplied materials, so validation against the official CVE and NVD records is recommended.

Defensive priority

High. CISA has designated the issue as known exploited and assigned a remediation due date of 2022-06-22 in the KEV catalog. Treat as a priority patching and exposure-reduction item.

Recommended defensive actions

  • Apply Microsoft updates per vendor instructions as directed by CISA.
  • Audit where Internet Explorer is still enabled or reachable in the environment.
  • Remove or restrict IE usage where possible, especially on managed endpoints and legacy application hosts.
  • Prioritize internet-facing systems and user endpoints for verification and remediation.
  • Confirm remediation status using the official CVE and NVD records linked in the source corpus.

Evidence notes

CISA’s Known Exploited Vulnerabilities metadata in the supplied corpus identifies this as “Microsoft Internet Explorer Use-After-Free Vulnerability,” adds it on 2022-06-08, sets a due date of 2022-06-22, and states the required action is to apply updates per vendor instructions. The corpus also links the official CVE record and NVD detail page, but it does not provide a CVSS score or vendor advisory text.

Sources and references

Verified primary and authoritative sources

  • CVE-2012-4969 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2012-4969

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

  • CVE-2012-4969 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2012-4969

    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.