How severe is CVE-2018-5684?

CVE-2018-5684 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-2018-5684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-5684?

CVE-2018-5684 affects Libav. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-5684?

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-2018-5684 published?

CVE-2018-5684 was published on 2018-01-14 and last updated on 2026-06-17.

CVE-2018-5684

CVE-2018-5684 is a high-severity vulnerability in Libav 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-119.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.8
EPSS exploit prediction: 1% (65th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Libav
Published: 2018-01-14
Last modified: 2026-06-17

Description

In Libav through 12.2, there is an invalid memcpy call in the ff_mov_read_stsd_entries function of libavformat/mov.c. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) and program failure with a crafted avi file.

Frequently asked questions

What is CVE-2018-5684?: In Libav through 12.2, there is an invalid memcpy call in the ff_mov_read_stsd_entries function of libavformat/mov.c. Remote attackers could leverage this vulnerability to cause a denial of service (segmentation fault) and program failure with a crafted avi file.
How severe is CVE-2018-5684?: CVE-2018-5684 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-2018-5684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (65th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-5684?: CVE-2018-5684 affects Libav. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-5684?: 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-2018-5684 published?: CVE-2018-5684 was published on 2018-01-14 and last updated on 2026-06-17.

References

https://bugzilla.libav.org/show_bug.cgi?id=1110

Affected products (1)

cpe:2.3:a:libav:libav:*:*:*:*:*:*:*:*

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