How severe is CVE-2019-1357?

CVE-2019-1357 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-2019-1357 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-1357?

CVE-2019-1357 primarily affects Microsoft Internet Explorer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-1357?

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

When was CVE-2019-1357 published?

CVE-2019-1357 was published on 2019-10-10 and last updated on 2026-06-17.

CVE-2019-1357

CVE-2019-1357 is a medium-severity vulnerability in Microsoft Internet Explorer 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-290.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
CVSS v2: 4.3
EPSS exploit prediction: 2% (80th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-290
Affected product: Microsoft Internet Explorer
Published: 2019-10-10
Last modified: 2026-06-17

Description

A spoofing vulnerability exists when Microsoft Browsers improperly handle browser cookies, aka 'Microsoft Browser Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0608.

Frequently asked questions

What is CVE-2019-1357?: A spoofing vulnerability exists when Microsoft Browsers improperly handle browser cookies, aka 'Microsoft Browser Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0608.
How severe is CVE-2019-1357?: CVE-2019-1357 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-2019-1357 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (80th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-1357?: CVE-2019-1357 primarily affects Microsoft Internet Explorer. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-1357?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-1357 published?: CVE-2019-1357 was published on 2019-10-10 and last updated on 2026-06-17.

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1357

Affected products (3)

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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