How severe is CVE-2019-1104?

CVE-2019-1104 has a CVSS 3.x base score of 7.5, 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-2019-1104 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1104?

CVE-2019-1104 primarily affects Microsoft Internet Explorer. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-1104?

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-2019-1104 published?

CVE-2019-1104 was published on 2019-07-15 and last updated on 2026-06-17.

CVE-2019-1104

CVE-2019-1104 is a high-severity vulnerability in Microsoft Internet Explorer with a CVSS 3.x base score of 7.5. 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-787.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 7.6
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-787
Affected product: Microsoft Internet Explorer
Published: 2019-07-15
Last modified: 2026-06-17

Description

A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka 'Microsoft Browser Memory Corruption Vulnerability'.

Frequently asked questions

What is CVE-2019-1104?: A remote code execution vulnerability exists in the way that Microsoft browsers access objects in memory, aka 'Microsoft Browser Memory Corruption Vulnerability'.
How severe is CVE-2019-1104?: CVE-2019-1104 has a CVSS 3.x base score of 7.5, 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-2019-1104 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1104?: CVE-2019-1104 primarily affects Microsoft Internet Explorer. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-1104?: 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-2019-1104 published?: CVE-2019-1104 was published on 2019-07-15 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1104

Affected products (4)

cpe:2.3:a:microsoft:internet_explorer:9:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:10:*:*:*:*:*:*:*
cpe:2.3:a:microsoft:internet_explorer:11:-:*:*:*:*:*:*
cpe:2.3:a:microsoft:edge:-:*:*:*:*:*:*:*

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