How severe is CVE-2017-0049?

CVE-2017-0049 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-2017-0049 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-0049?

CVE-2017-0049 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-0049?

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

When was CVE-2017-0049 published?

CVE-2017-0049 was published on 2017-03-17 and last updated on 2026-06-17.

CVE-2017-0049

CVE-2017-0049 is a medium-severity vulnerability in Microsoft Internet Explorer with a CVSS 3.x base score of 4.3. Its EPSS exploit-prediction score of 39% places it in the 98th percentile, indicating an elevated likelihood of exploitation. 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: 39% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Microsoft Internet Explorer
Published: 2017-03-17
Last modified: 2026-06-17

Description

The VBScript engine in Microsoft Internet Explorer 11 allows remote attackers to obtain sensitive information from process memory via a crafted web site, aka "Scripting Engine Information Disclosure Vulnerability." This vulnerability is different from those described in CVE-2017-0018, and CVE-2017-0037.

Frequently asked questions

What is CVE-2017-0049?: The VBScript engine in Microsoft Internet Explorer 11 allows remote attackers to obtain sensitive information from process memory via a crafted web site, aka "Scripting Engine Information Disclosure Vulnerability." This vulnerability is different from those described in CVE-2017-0018, and CVE-2017-0037.
How severe is CVE-2017-0049?: CVE-2017-0049 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-2017-0049 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 39% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-0049?: CVE-2017-0049 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-0049?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2017-0049 published?: CVE-2017-0049 was published on 2017-03-17 and last updated on 2026-06-17.

References

Affected products (1)

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

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