How severe is CVE-2017-0231?

CVE-2017-0231 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 none, integrity low, and availability none.

Is CVE-2017-0231 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-0231?

CVE-2017-0231 primarily affects Microsoft Edge. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-0231?

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

When was CVE-2017-0231 published?

CVE-2017-0231 was published on 2017-05-12 and last updated on 2026-06-17.

CVE-2017-0231

CVE-2017-0231 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 4% (88th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Microsoft Edge
Published: 2017-05-12
Last modified: 2026-06-17

Description

A spoofing vulnerability exists when Microsoft browsers render SmartScreen Filter, aka "Microsoft Browser Spoofing Vulnerability."

Frequently asked questions

What is CVE-2017-0231?: A spoofing vulnerability exists when Microsoft browsers render SmartScreen Filter, aka "Microsoft Browser Spoofing Vulnerability."
How severe is CVE-2017-0231?: CVE-2017-0231 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 none, integrity low, and availability none.
Is CVE-2017-0231 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (88th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-0231?: CVE-2017-0231 primarily affects Microsoft Edge. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-0231?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-0231 published?: CVE-2017-0231 was published on 2017-05-12 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:microsoft:edge:*:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:11:*:*:*:*:*:*:*

More vulnerabilities in Microsoft Edge

CVE-2017-0028 — Critical (CVSS 9.8): A remote code execution vulnerability exists when Microsoft scripting engine improperly accesses objects in memory. The…
CVE-2017-0252 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2017-0223 — Critical (CVSS 9.8): A remote code execution vulnerability exists in Microsoft Chakra Core in the way JavaScript engines render when…
CVE-2015-0313 — Critical (CVSS 9.8): Use-after-free vulnerability in Adobe Flash Player before 13.0.0.269 and 14.x through 16.x before 16.0.0.305 on Windows…
CVE-2015-0311 — Critical (CVSS 9.8): Unspecified vulnerability in Adobe Flash Player through 13.0.0.262 and 14.x, 15.x, and 16.x through 16.0.0.287 on…
CVE-2024-7971 — Critical (CVSS 9.6): Type confusion in V8 in Google Chrome prior to 128.0.6613.84 allowed a remote attacker to exploit heap corruption via a…

All CVEs affecting Microsoft Edge →

Other CWE-20 (Improper Input Validation) vulnerabilities

CVE-2026-48316 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48281 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48277 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Input Validation vulnerability that could…
CVE-2026-48055 — Critical (CVSS 10.0): Streambert is a cross-platform Electron Desktop App to stream and download any video media. In versions 2.4.0 and…
CVE-2026-34910 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi OS…
CVE-2026-33587 — Critical (CVSS 10.0): Lack of user input sanitisation in Open Notebook v1.8.3 allows the application user to execute Python code (and…

Browse all CWE-20 (Improper Input Validation) vulnerabilities →