How severe is CVE-2012-0012?

CVE-2012-0012 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2012-0012 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2012-0012?

CVE-2012-0012 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2012-0012?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2012-0012 published?

CVE-2012-0012 was published on 2012-02-14 and last updated on 2026-06-16.

CVE-2012-0012

CVE-2012-0012 is a medium-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 4.3. Its EPSS exploit-prediction score of 17% places it in the 97th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-665.

Key facts

Severity: Medium (CVSS 2.0 base score 4.3)
EPSS exploit prediction: 17% (97th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-665
Affected product: Microsoft Internet Explorer
Published: 2012-02-14
Last modified: 2026-06-16

Description

Microsoft Internet Explorer 9 does not properly handle the creation and initialization of string objects, which allows remote attackers to read data from arbitrary process-memory locations via a crafted web site, aka "Null Byte Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2012-0012?: Microsoft Internet Explorer 9 does not properly handle the creation and initialization of string objects, which allows remote attackers to read data from arbitrary process-memory locations via a crafted web site, aka "Null Byte Information Disclosure Vulnerability."
How severe is CVE-2012-0012?: CVE-2012-0012 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2012-0012 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 17% (97th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2012-0012?: CVE-2012-0012 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2012-0012?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2012-0012 published?: CVE-2012-0012 was published on 2012-02-14 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*

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