Is CVE-2017-11684 in the CISA KEV catalog?

No. CVE-2017-11684 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-11684?

CVE-2017-11684 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2017-11684?

CVE-2017-11684 has an EPSS score of 1.62% (73th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-11684?

Upgrade ffmpeg on debian 11 to 7:2.3.1-1 or later.

CVE & CISA-KEV Catalog

CVE-2017-11684

HIGHEPSS 73th pctl

7.5

CVSS v3

NVD

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.

How to fix

Remediation Available

ffmpegDebian

Fixed in:7:2.3.1-1CVE-2017-11684

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.62%probability of exploitation in 30 days

73rdpercentile

Elevated risk: more likely to be exploited than 73% of all known CVEs.

References

Exploit1

bugzilla.libav.org

Third-Party Advisory1

securityfocus.com

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-13.