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PatchSiren cyber security CVE debrief

CVE-2013-3163 Microsoft CVE debrief

CVE-2013-3163 is a Microsoft Internet Explorer memory corruption vulnerability that CISA lists in its Known Exploited Vulnerabilities catalog. The supplied corpus does not include a CVSS score, but the KEV listing indicates confirmed exploitation and a strong need to prioritize exposure reduction. CISA’s note says the impacted product is end-of-life and should be disconnected if still in use.

Vendor
Microsoft
Product
Internet Explorer
CVSS
Unknown
CISA KEV
Listed
Original CVE published
2023-03-30
Original CVE updated
2023-03-30
Advisory published
2023-03-30
Advisory updated
2023-03-30

Who should care

Organizations that still have legacy Microsoft Internet Explorer in use, especially endpoint, desktop engineering, vulnerability management, and incident response teams. Any environment where IE remains installed or accessible should treat this as urgent.

Technical summary

The available source material identifies the issue as a memory corruption vulnerability in Microsoft Internet Explorer. CISA has added CVE-2013-3163 to the Known Exploited Vulnerabilities catalog, which means it has been observed as exploited in the wild or otherwise meets CISA’s KEV criteria. The supplied notes also indicate the impacted product is end-of-life.

Defensive priority

Urgent. If Internet Explorer is still present, reduce exposure immediately and disconnect affected legacy systems where removal is not possible.

Recommended defensive actions

  • Inventory all systems that still have Microsoft Internet Explorer installed or accessible.
  • Remove, disable, or block Internet Explorer wherever possible and move users to supported browsers.
  • If legacy IE cannot be eliminated immediately, disconnect affected systems from networks or isolate them as CISA recommends for end-of-life software.
  • Apply vendor guidance and any applicable Microsoft security bulletin remediation referenced in the source notes.
  • Review exposure, access paths, and compensating controls for any remaining IE-dependent workflows.
  • Prioritize incident response and vulnerability remediation workflows for KEV-listed assets.

Evidence notes

Evidence is limited to the supplied CVE title/description, the CISA KEV metadata, and the official CVE/NVD references. CISA’s source notes state the impacted product is end-of-life and should be disconnected if still in use. No CVSS score was supplied in the corpus, so severity should be treated as operationally urgent based on confirmed exploitation and legacy-product risk rather than a numeric score.

Sources and references

Verified primary and authoritative sources

  • CVE-2013-3163 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2013-3163

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

  • CVE-2013-3163 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2013-3163

    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.