CVE-2013-3893
Microsoft Internet Explorer Resource Management Errors Vulnerability
- High 8.8
- Exploited: added to CISA KEV 12 Aug 2025
Description
Use-after-free vulnerability in the SetMouseCapture implementation in mshtml.dll in Microsoft Internet Explorer 6 through 11 allows remote attackers to execute arbitrary code via crafted JavaScript strings, as demonstrated by use of an ms-help: URL that triggers loading of hxds.dll.
Key facts
- Published
- 18 Sep 2013
- Last changed
- 22 Oct 2025
- Assigned by
- microsoft
- KEV added
- 12 Aug 2025
- KEV fix due
- 2 Sep 2025
- EPSS
- 87.639% likely to be exploited in the next 30 days, higher than 99.763% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: no; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 8.8CVSS 3.1, Highfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 18 Sep 2013 Published
- 12 Aug 2025 CVE-2013-3893 added to CISA KEV
- 12 Aug 2025 Added to the CISA KEV catalogue