How severe is CVE-1999-0490?

CVE-1999-0490 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-1999-0490 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0490?

CVE-1999-0490 primarily affects Microsoft Internet Explorer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-1999-0490?

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-1999-0490 published?

CVE-1999-0490 was published on 1999-04-21 and last updated on 2026-06-16.

CVE-1999-0490

CVE-1999-0490 is a high-severity vulnerability in Microsoft Internet Explorer with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 10% (95th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Internet Explorer
Published: 1999-04-21
Last modified: 2026-06-16

Description

MSHTML.DLL in Internet Explorer 5.0 allows a remote attacker to learn information about a local user's files via an IMG SRC tag.

Frequently asked questions

What is CVE-1999-0490?: MSHTML.DLL in Internet Explorer 5.0 allows a remote attacker to learn information about a local user's files via an IMG SRC tag.
How severe is CVE-1999-0490?: CVE-1999-0490 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-1999-0490 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 10% (95th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0490?: CVE-1999-0490 primarily affects Microsoft Internet Explorer. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-1999-0490?: 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-1999-0490 published?: CVE-1999-0490 was published on 1999-04-21 and last updated on 2026-06-16.

References

https://docs.microsoft.com/en-us/security-updates/securitybulletins/1999/ms99-012

Affected products (2)

cpe:2.3:a:microsoft:internet_explorer:4.0:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:5.0:*:*:*:*:*:*:*

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