How severe is CVE-2017-11684?

CVE-2017-11684 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-2017-11684 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-11684?

CVE-2017-11684 affects Libav. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-11684?

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-2017-11684 published?

CVE-2017-11684 was published on 2017-07-27 and last updated on 2026-06-17.

CVE-2017-11684

CVE-2017-11684 is a high-severity vulnerability in Libav 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.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Libav
Published: 2017-07-27
Last modified: 2026-06-17

Description

There is an illegal address access in the build_table function in libavcodec/bitstream.c of Libav 12.1 that will lead to remote denial of service via crafted input.

Frequently asked questions

What is CVE-2017-11684?: There is an illegal address access in the build_table function in libavcodec/bitstream.c of Libav 12.1 that will lead to remote denial of service via crafted input.
How severe is CVE-2017-11684?: CVE-2017-11684 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-2017-11684 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-11684?: CVE-2017-11684 affects Libav. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-11684?: 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-2017-11684 published?: CVE-2017-11684 was published on 2017-07-27 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:libav:libav:12.1:*:*:*:*:*:*:*

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