CVE-2013-1347
Microsoft Internet Explorer Remote Code Execution Vulnerability
- High 8.8
- Exploited: added to CISA KEV 3 Mar 2022
- A public exploit reference is listed
Description
Microsoft Internet Explorer 8 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing an object that (1) was not properly allocated or (2) is deleted, as exploited in the wild in May 2013.
Key facts
- Published
- 5 May 2013
- Last changed
- 22 Oct 2025
- Assigned by
- microsoft
- KEV added
- 3 Mar 2022
- KEV fix due
- 24 Mar 2022
- EPSS
- 77.74% likely to be exploited in the next 30 days, higher than 99.575% 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 updates per vendor instructions.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
- 5 May 2013 Published
- 3 Mar 2022 CVE-2013-1347 added to CISA KEV
- 3 Mar 2022 Added to the CISA KEV catalogue