How severe is CVE-2011-0031?

CVE-2011-0031 has a CVSS 2.0 base score of 4.3, rated medium severity.

Is CVE-2011-0031 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-2011-0031?

CVE-2011-0031 primarily affects Microsoft Windows 7. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-0031?

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

When was CVE-2011-0031 published?

CVE-2011-0031 was published on 2011-02-09 and last updated on 2026-06-16.

CVE-2011-0031

CVE-2011-0031 is a medium-severity vulnerability in Microsoft Windows 7 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-200.

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-200
Affected product: Microsoft Windows 7
Published: 2011-02-09
Last modified: 2026-06-16

Description

The (1) JScript 5.8 and (2) VBScript 5.8 scripting engines in Microsoft Windows Server 2008 R2 and Windows 7 do not properly load decoded scripts obtained from web pages, which allows remote attackers to trigger memory corruption and consequently obtain sensitive information via a crafted web site, aka "Scripting Engines Information Disclosure Vulnerability."

Frequently asked questions

What is CVE-2011-0031?: The (1) JScript 5.8 and (2) VBScript 5.8 scripting engines in Microsoft Windows Server 2008 R2 and Windows 7 do not properly load decoded scripts obtained from web pages, which allows remote attackers to trigger memory corruption and consequently obtain sensitive information via a crafted web site, aka "Scripting Engines Information Disclosure Vulnerability."
How severe is CVE-2011-0031?: CVE-2011-0031 has a CVSS 2.0 base score of 4.3, rated medium severity.
Is CVE-2011-0031 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-2011-0031?: CVE-2011-0031 primarily affects Microsoft Windows 7. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2011-0031?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2011-0031 published?: CVE-2011-0031 was published on 2011-02-09 and last updated on 2026-06-16.

References

Affected products (3)

cpe:2.3:o:microsoft:windows_7:-:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:*:itanium:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2008:r2:*:x64:*:*:*:*:*

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