How severe is CVE-2013-6640?

CVE-2013-6640 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2013-6640 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-6640?

CVE-2013-6640 primarily affects Google Chrome. In total, 83 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2013-6640?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-6640 published?

CVE-2013-6640 was published on 2013-12-07 and last updated on 2026-06-17.

CVE-2013-6640

CVE-2013-6640 is a high-severity vulnerability in Google Chrome with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Google Chrome
Published: 2013-12-07
Last modified: 2026-06-17

Description

The DehoistArrayIndex function in hydrogen-dehoist.cc (aka hydrogen.cc) in Google V8 before 3.22.24.7, as used in Google Chrome before 31.0.1650.63, allows remote attackers to cause a denial of service (out-of-bounds read) via JavaScript code that sets a variable to the value of an array element with a crafted index.

Frequently asked questions

What is CVE-2013-6640?: The DehoistArrayIndex function in hydrogen-dehoist.cc (aka hydrogen.cc) in Google V8 before 3.22.24.7, as used in Google Chrome before 31.0.1650.63, allows remote attackers to cause a denial of service (out-of-bounds read) via JavaScript code that sets a variable to the value of an array element with a crafted index.
How severe is CVE-2013-6640?: CVE-2013-6640 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2013-6640 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-6640?: CVE-2013-6640 primarily affects Google Chrome. In total, 83 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2013-6640?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-6640 published?: CVE-2013-6640 was published on 2013-12-07 and last updated on 2026-06-17.

References

Affected products (83)

cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.0:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.2:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.3:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.4:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.5:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.6:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.7:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.8:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.9:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.10:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.11:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.12:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.13:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.14:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.15:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.16:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.17:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.18:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.19:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.20:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.22:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.23:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.25:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.26:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.27:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.28:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.29:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.30:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.31:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.32:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.33:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.34:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.35:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.36:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.37:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.38:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.39:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.41:*:*:*:*:*:*:*
cpe:2.3:a:google:chrome:31.0.1650.42:*:*:*:*:*:*:*

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