How severe is CVE-2020-13558?

CVE-2020-13558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-13558 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-13558?

CVE-2020-13558 affects Webkitgtk. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-13558?

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-2020-13558 published?

CVE-2020-13558 was published on 2021-03-03 and last updated on 2026-06-17.

CVE-2020-13558

CVE-2020-13558 is a high-severity vulnerability in Webkitgtk with a CVSS 3.x base score of 8.8. 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-416.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (76th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Webkitgtk
Published: 2021-03-03
Last modified: 2026-06-17

Description

A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit WebKitGTK 2.30.1. A specially crafted web page can lead to a use after free.

Frequently asked questions

What is CVE-2020-13558?: A code execution vulnerability exists in the AudioSourceProviderGStreamer functionality of Webkit WebKitGTK 2.30.1. A specially crafted web page can lead to a use after free.
How severe is CVE-2020-13558?: CVE-2020-13558 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-13558 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (76th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-13558?: CVE-2020-13558 affects Webkitgtk. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-13558?: 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-2020-13558 published?: CVE-2020-13558 was published on 2021-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webkitgtk:webkitgtk:2.30.1:*:*:*:*:*:*:*

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CVE-2024-43102 — Critical (CVSS 10.0): Concurrent removals of certain anonymous shared memory mappings by using the UMTX_SHM_DESTROY sub-request of…
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