How severe is CVE-2020-11500?

CVE-2020-11500 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2020-11500 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-11500?

CVE-2020-11500 affects Zoom Meetings. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-11500?

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-2020-11500 published?

CVE-2020-11500 was published on 2020-04-03 and last updated on 2026-06-17.

CVE-2020-11500

CVE-2020-11500 is a high-severity vulnerability in Zoom Meetings 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-327.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Zoom Meetings
Published: 2020-04-03
Last modified: 2026-06-17

Description

Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.

Frequently asked questions

What is CVE-2020-11500?: Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.
How severe is CVE-2020-11500?: CVE-2020-11500 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2020-11500 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-11500?: CVE-2020-11500 affects Zoom Meetings. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-11500?: 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-2020-11500 published?: CVE-2020-11500 was published on 2020-04-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:zoom:meetings:*:*:*:*:*:*:*:*

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