How severe is CVE-2017-11791?

CVE-2017-11791 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2017-11791 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11791?

CVE-2017-11791 primarily affects Microsoft Chakracore. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-11791?

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

When was CVE-2017-11791 published?

CVE-2017-11791 was published on 2017-11-15 and last updated on 2026-06-17.

CVE-2017-11791

CVE-2017-11791 is a low-severity vulnerability in Microsoft Chakracore with a CVSS 3.x base score of 3.1. 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-200.

Key facts

Severity: Low (CVSS 3.x base score 3.1)
CVSS v2: 2.6
EPSS exploit prediction: 5% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Chakracore
Published: 2017-11-15
Last modified: 2026-06-17

Description

ChakraCore and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to obtain information to further compromise the user's system, due to how the scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-11834.

Frequently asked questions

What is CVE-2017-11791?: ChakraCore and Internet Explorer in Microsoft Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, and Microsoft Edge and Internet Explorer in Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to obtain information to further compromise the user's system, due to how the scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-11834.
How severe is CVE-2017-11791?: CVE-2017-11791 has a CVSS 3.x base score of 3.1, rated low severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2017-11791 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11791?: CVE-2017-11791 primarily affects Microsoft Chakracore. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-11791?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11791 published?: CVE-2017-11791 was published on 2017-11-15 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:a:microsoft:chakracore:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*

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CVE-2018-8500 — Critical (CVSS 9.8): A remote code execution vulnerability exists in the way that the ChakraCore scripting engine handles objects in memory,…
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