How severe is CVE-2017-8739?

CVE-2017-8739 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2017-8739 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-8739?

CVE-2017-8739 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-8739?

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

When was CVE-2017-8739 published?

CVE-2017-8739 was published on 2017-09-13 and last updated on 2026-06-17.

CVE-2017-8739

CVE-2017-8739 is a medium-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 4.3. 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: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Edge
Published: 2017-09-13
Last modified: 2026-06-17

Description

Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to obtain information to further compromise the user's system, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability".

Frequently asked questions

What is CVE-2017-8739?: Microsoft Edge in Microsoft Windows 10 1703 allows an attacker to obtain information to further compromise the user's system, due to the way that the Microsoft Edge scripting engine handles objects in memory, aka "Scripting Engine Information Disclosure Vulnerability".
How severe is CVE-2017-8739?: CVE-2017-8739 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2017-8739 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-8739?: CVE-2017-8739 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-8739?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-8739 published?: CVE-2017-8739 was published on 2017-09-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*

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