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CVE-2011-0663

Microsoft Jscript remote code execution

8.8 HIGHEPSS 26.2%
  1. Published13 Apr 2011

Description

Multiple integer overflows in the Microsoft (1) JScript 5.6 through 5.8 and (2) VBScript 5.6 through 5.8 scripting engines allow remote attackers to execute arbitrary code via a crafted web page, aka "Scripting Memory Reallocation Vulnerability."

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionRequired
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

Microsoft Jscript5.6 · 5.7 · 5.8
Microsoft Vbscript5.6 · 5.7 · 5.8

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

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Frequently asked

Is CVE-2011-0663 being actively exploited?

CVE-2011-0663 is not in the CISA KEV catalog. Its EPSS exploit probability is 26.2%.

How severe is CVE-2011-0663?

CVE-2011-0663 has a CVSS 3.1 base score of 8.8, rated high. EPSS estimates a 26.2% probability of exploitation.

Which products are affected by CVE-2011-0663?

Affected products include Microsoft Jscript, Microsoft Vbscript.

How do I fix CVE-2011-0663?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2011-0663 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.