How severe is CVE-2019-9746?

CVE-2019-9746 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 none, integrity none, and availability high.

Is CVE-2019-9746 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-9746?

CVE-2019-9746 affects Webmproject Libwebm. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2019-9746?

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-2019-9746 published?

CVE-2019-9746 was published on 2019-03-13 and last updated on 2026-06-17.

CVE-2019-9746

CVE-2019-9746 is a high-severity vulnerability in Webmproject Libwebm 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-476.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (74th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Webmproject Libwebm
Published: 2019-03-13
Last modified: 2026-06-17

Description

In libwebm before 2019-03-08, a NULL pointer dereference caused by the functions OutputCluster and OutputTracks in webm_info.cc will trigger an abort, which allows a DoS attack, a similar issue to CVE-2018-19212.

Frequently asked questions

What is CVE-2019-9746?: In libwebm before 2019-03-08, a NULL pointer dereference caused by the functions OutputCluster and OutputTracks in webm_info.cc will trigger an abort, which allows a DoS attack, a similar issue to CVE-2018-19212.
How severe is CVE-2019-9746?: CVE-2019-9746 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 none, integrity none, and availability high.
Is CVE-2019-9746 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (74th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-9746?: CVE-2019-9746 affects Webmproject Libwebm. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2019-9746?: 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-2019-9746 published?: CVE-2019-9746 was published on 2019-03-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:webmproject:libwebm:*:*:*:*:*:*:*:*

More vulnerabilities in Webmproject Libwebm

CVE-2018-6548 — Critical (CVSS 9.8): A use-after-free issue was discovered in libwebm through 2018-02-02. If a Vp9HeaderParser was initialized once before,…
CVE-2018-6406 — High (CVSS 8.8): The function ParseVP9SuperFrameIndex in common/libwebm_util.cc in libwebm through 2018-01-30 does not validate the…
CVE-2018-19212 — Medium (CVSS 6.5): In libwebm through 2018-10-03, there is an abort caused by libwebm::Webm2Pes::InitWebmParser() that will lead to a DoS…

All CVEs affecting Webmproject Libwebm →

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