How severe is CVE-2019-13449?

CVE-2019-13449 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2019-13449 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-13449?

CVE-2019-13449 affects Zoom. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-13449?

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

When was CVE-2019-13449 published?

CVE-2019-13449 was published on 2019-07-09 and last updated on 2026-06-17.

CVE-2019-13449

CVE-2019-13449 is a medium-severity vulnerability in Zoom with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.3
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Zoom
Published: 2019-07-09
Last modified: 2026-06-17

Description

In the Zoom Client before 4.4.2 on macOS, remote attackers can cause a denial of service (continual focus grabs) via a sequence of invalid launch?action=join&confno= requests to localhost port 19421.

Frequently asked questions

What is CVE-2019-13449?: In the Zoom Client before 4.4.2 on macOS, remote attackers can cause a denial of service (continual focus grabs) via a sequence of invalid launch?action=join&confno= requests to localhost port 19421.
How severe is CVE-2019-13449?: CVE-2019-13449 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2019-13449 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-13449?: CVE-2019-13449 affects Zoom. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-13449?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2019-13449 published?: CVE-2019-13449 was published on 2019-07-09 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zoom:zoom:*:*:*:*:*:mac_os_x:*:*

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