CVE-2018-7557

MEDIUMNVD 6.56.5—

6.5

The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 60.9%
KEV: Not listed

Published

February 28, 2018

Last Modified

November 21, 2024

References (10)

cve@mitrehttps://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
cve@mitrehttps://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae
cve@mitrehttps://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
cve@mitrehttps://security.gentoo.org/glsa/202003-65
cve@mitrehttps://www.debian.org/security/2018/dsa-4249
af854a3a-2127-422b-91ae-364da2661108https://git.ffmpeg.org/gitweb/ffmpeg.git/commit/7414d0bda7763f9bd69c26c068e482ab297c1c96
af854a3a-2127-422b-91ae-364da2661108https://github.com/FFmpeg/FFmpeg/commit/e724bd1dd9efea3abb8586d6644ec07694afceae
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2019/01/msg00006.html
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202003-65
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2018/dsa-4249

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 9× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:41 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 10:57 UTCEG score recompute
2026-05-28 10:57 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-25 00:43 UTCOSV refresh

Frequently asked(5)

What is CVE-2018-7557?

CVE-2018-7557 is a medium vulnerability published on February 28, 2018. The decode_init function in libavcodec/utvideodec.c in FFmpeg 2.8 through 3.4.2 allows remote attackers to cause a denial of service (Out of array read) via an AVI file with crafted dimensions within chroma subsampling data.

When was CVE-2018-7557 disclosed?

CVE-2018-7557 was first published in the National Vulnerability Database on February 28, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-7557 actively exploited?

CVE-2018-7557 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 60.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-7557?

CVE-2018-7557 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-7557?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-7557, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2018-7557

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-7557?

🔗 Related CVEs(same CWE)

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Published

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References (10)

Frequently asked(5)

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