How severe is CVE-2017-11863?

CVE-2017-11863 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.

Is CVE-2017-11863 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11863?

CVE-2017-11863 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11863?

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

When was CVE-2017-11863 published?

CVE-2017-11863 was published on 2017-11-15 and last updated on 2026-06-17.

CVE-2017-11863

CVE-2017-11863 is a medium-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 6.1. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 3% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Edge
Published: 2017-11-15
Last modified: 2026-06-17

Description

Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to trick a user into loading a page containing malicious content, due to how the Edge Content Security Policy (CSP) validates documents, aka "Microsoft Edge Security Feature Bypass Vulnerability". This CVE ID is unique from CVE-2017-11872 and CVE-2017-11874.

Frequently asked questions

What is CVE-2017-11863?: Microsoft Edge in Microsoft Windows 10 Gold, 1511, 1607, 1703, 1709, Windows Server 2016 and Windows Server, version 1709 allows an attacker to trick a user into loading a page containing malicious content, due to how the Edge Content Security Policy (CSP) validates documents, aka "Microsoft Edge Security Feature Bypass Vulnerability". This CVE ID is unique from CVE-2017-11872 and CVE-2017-11874.
How severe is CVE-2017-11863?: CVE-2017-11863 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
Is CVE-2017-11863 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11863?: CVE-2017-11863 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11863?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-11863 published?: CVE-2017-11863 was published on 2017-11-15 and last updated on 2026-06-17.

References

Affected products (1)

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

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