How severe is CVE-2015-2403?

CVE-2015-2403 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2015-2403 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-2403?

CVE-2015-2403 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2015-2403?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-2403 published?

CVE-2015-2403 was published on 2015-07-14 and last updated on 2026-06-17.

CVE-2015-2403

CVE-2015-2403 is a critical-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 9.3. Its EPSS exploit-prediction score of 13% places it in the 96th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 13% (96th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Microsoft Internet Explorer
Published: 2015-07-14
Last modified: 2026-06-17

Description

Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability."

Frequently asked questions

What is CVE-2015-2403?: Microsoft Internet Explorer 8 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted web site, aka "Internet Explorer Memory Corruption Vulnerability."
How severe is CVE-2015-2403?: CVE-2015-2403 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2015-2403 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 13% (96th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-2403?: CVE-2015-2403 affects Microsoft Internet Explorer. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2015-2403?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-2403 published?: CVE-2015-2403 was published on 2015-07-14 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:microsoft:internet_explorer:8:*:*:*:*:*:*:*

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