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01 Record

CVE-2012-1878

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "OnBeforeDeactivate Event

UnratedPUBLISHEDCNA: microsoft
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Microsoft Internet Explorer 6 through 9 does not properly handle objects in memory, which allows remote attackers to execute arbitrary code by accessing a deleted object, aka "OnBeforeDeactivate Event

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
22.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 97.4% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2012-06-12 22:00Z14 YR AGO
Last updated
2024-08-06 19:08Z2 YR AGO
Reserved
2012-03-22
Assigning CNA
microsoft
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-94Improper Control of Generation of Code ('Code Injection')Base
Data version
5.1
Document digest
491bb7e69b42e4ce8eded5d6efa7694d2ea2aabcee56bdc956ce6f0d711e4600

05 Affected products

VendorProductVersionsPlatforms
microsoftinternet_explorerNot specified—
microsoftwindows_2003_serverNot specified—
microsoftwindows_7Not specified—
microsoftwindows_server_2003Not specified—
microsoftwindows_server_2008Not specified—
microsoftwindows_vistaNot specified—
microsoftwindows_xpNot specified—

06 References