Is CVE-2017-16803 actively exploited?

CVE-2017-16803 has no public evidence of in-the-wild exploitation as of 2025-04-20.

What is the CVSS score for CVE-2017-16803?

CVE-2017-16803 has a CVSS score of 7.5 (HIGH severity). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

How do I patch CVE-2017-16803?

Patch guidance is available from libav security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2017-16803.

Which products are affected by CVE-2017-16803?

3 products: libav libav, libav libav, libav libav.

Fix CVE-2017-16803 - HIGH libav libav

Description

In Libav through 11.11 and 12.x through 12.1, the smacker_decode_tree function in libavcodec/smacker.c does not properly restrict tree recursion, which allows remote attackers to cause a denial of service (bitstream.c:build_table() out-of-bounds read and application crash) via a crafted Smacker stream.

CVSS Metrics

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: none
Integrity: none
Availability: high
Weaknesses: CWE-119 · Memory Buffer Errors

Metadata

Primary Vendor: LIBAV
Published: 11/13/2017
Last Modified: 4/20/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

libav : libavlibav : libavlibav : libav

Remediation Guidance

Executive Summary

Cite this page

CVE-2017-16803. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2017-16803

View on NIST NVD

CVE-2017-16803 vulnerability