How severe is CVE-2017-0233?

CVE-2017-0233 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-0233 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-0233?

CVE-2017-0233 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-0233?

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-2017-0233 published?

CVE-2017-0233 was published on 2017-05-12 and last updated on 2026-06-17.

CVE-2017-0233

CVE-2017-0233 is a high-severity vulnerability in Microsoft Edge with a CVSS 3.x base score of 8.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 8.3)
CVSS v2: 5.1
EPSS exploit prediction: 3% (86th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Edge
Published: 2017-05-12
Last modified: 2026-06-17

Description

An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser, aka "Microsoft Edge Elevation of Privilege Vulnerability." This CVE ID is unique from CVE-2017-0241.

Frequently asked questions

What is CVE-2017-0233?: An elevation of privilege vulnerability exists in Microsoft Edge that could allow an attacker to escape from the AppContainer sandbox in the browser, aka "Microsoft Edge Elevation of Privilege Vulnerability." This CVE ID is unique from CVE-2017-0241.
How severe is CVE-2017-0233?: CVE-2017-0233 has a CVSS 3.x base score of 8.3, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-0233 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-0233?: CVE-2017-0233 affects Microsoft Edge. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-0233?: 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-2017-0233 published?: CVE-2017-0233 was published on 2017-05-12 and last updated on 2026-06-17.

References

Affected products (1)

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

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