high Known exploitedREV. 01
CVE-2013-3893Internet Explorer — mouse capture use-after-free (2013)
Internet Explorer 6 through 11 use memory after releasing it in the mouse capture path of their rendering engine, so crafted script on a page runs the attacker's code. It was exploited before the fix shipped.
Read the risk
THE VITAL STATS- CVSS score
- 8.8/ 10 CVSS v3.1
- EPSS probability
- 86% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2013-09-18
- Added to KEV
- 2025-08-12
- Exploit published
- Yes
- Confidence
- high
- Kill chain
- execution
- MITRE ATT&CK
- T1203
- Severity
- high
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attacker needsThe user must open an attacker-controlled page in Internet Explorer 6 through 11.
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisoryblogs.technet.comblogs.technet.com
- 04Vendor advisorytechnet.microsoft.comtechnet.microsoft.com
- 05Vendor advisorydocs.microsoft.comdocs.microsoft.com
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-24 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-24 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.