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PatchSiren cyber security CVE debrief

CVE-2013-3893 Microsoft CVE debrief

CVE-2013-3893 is a Microsoft Internet Explorer vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog. The supplied corpus does not include exploit mechanics or a CVSS score, but it does confirm that the issue is treated as actively exploited and should be handled as a priority remediation item.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2025-08-12
Original CVE updated
2025-08-12
Advisory published
2025-08-12
Advisory updated
2025-08-12

Who should care

Security and endpoint teams responsible for Windows desktops, VDI, kiosks, and any environment that still permits Microsoft Internet Explorer use should treat this as urgent. Incident responders and vulnerability managers should also prioritize it because CISA has placed it in the KEV catalog.

Technical summary

The official material available here identifies the issue as a Microsoft Internet Explorer "Resource Management Errors Vulnerability." Beyond that title, the supplied sources do not describe the underlying memory, lifetime, or input-handling flaw, so the safest interpretation is to rely on the vendor guidance referenced by CISA rather than infer more specific behavior.

Defensive priority

High: CISA KEV listing indicates known exploitation. Apply vendor mitigations or patching immediately, and do not defer remediation past the KEV due date if exposure remains.

Recommended defensive actions

  • Follow the vendor instructions referenced by CISA, including Microsoft security bulletin MS13-080.
  • Inventory where Microsoft Internet Explorer is still present or allowed in the environment.
  • Prioritize remediation before the CISA KEV due date of 2025-09-02.
  • If mitigations are unavailable, discontinue use of the product per CISA guidance.
  • Validate that the mitigation or patch was deployed successfully across affected systems.

Evidence notes

The strongest evidence in the supplied corpus is the CISA KEV entry, which marks CVE-2013-3893 as known exploited and assigns dateAdded 2025-08-12 with dueDate 2025-09-02. The KEV notes also reference Microsoft security bulletin MS13-080 and the NVD record for additional vendor and reference context. No exploit code, severity score, or detailed root-cause analysis is present in the provided sources, so this debrief stays limited to the official metadata and linked references.

Sources and references

Verified primary and authoritative sources

  • CVE-2013-3893 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2013-3893

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

  • CVE-2013-3893 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2013-3893

    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.