Is CVE-2011-1256 being actively exploited?

CVE-2011-1256 is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.

What is the CVSS score for CVE-2011-1256?

CVE-2011-1256 has a CVSS 2.0 base score of 9.3 (HIGH).

CVE-2011-1256

HIGH · CVSS 9.3EPSS 18.6%EU EUVD

Microsoft Internet Explorer 6 through 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 initialized or (2) is deleted, aka "DOM Modification Memory Corruption Vulnerability."

Key facts

CVSS score: 9.3 (v2.0)
Severity: HIGH
CVSS vector: AV:N/AC:M/Au:N/C:C/I:C/A:C
Weakness (CWE): CWE-908
EPSS score: 18.6% (97th percentile)
In CISA KEV: No
In EU EUVD: Yes (EUVD-2011-1264)
Published: June 16, 2011
NVD last modified: June 16, 2026
Status: Modified

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2011-1264 in the EU Vulnerability Database. Last updated in EUVD on August 6, 2024.

View on the EU Vulnerability Database

Affected products

microsoft / internet explorer
microsoft / internet explorer
microsoft / internet explorer
microsoft / windows 7
microsoft / windows server 2003
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows server 2008
microsoft / windows vista
microsoft / windows vista
microsoft / windows xp
microsoft / windows xp
microsoft / windows xp

References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-050(Patch, Vendor Advisory)
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12716(Tool Signature)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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