CVE-2018-18828

MEDIUMNVD 6.56.5—

6.5

There exists a heap-based buffer overflow in vc1_decode_i_block_adv in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.

CVSS v3: 6.5
EG Score: 6.5(medium)
EPSS: 48.7%
KEV: Not listed

Published

October 30, 2018

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://bugzilla.libav.org/show_bug.cgi?id=1135
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.libav.org/show_bug.cgi?id=1135

Weakness Classification(1)

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

CWE-787Out-of-bounds Write

Data Freshness Timeline

(refreshed 9× in last 7d / 20× 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
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 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 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 01:33 UTCEG score recompute
2026-05-28 01:33 UTCGHSA enrichment
2026-05-27 13:38 UTCepss_batch
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 22:16 UTCOSV refresh

Frequently asked(5)

What is CVE-2018-18828?

CVE-2018-18828 is a medium vulnerability published on October 30, 2018. There exists a heap-based buffer overflow in vc1decodeiblockadv in vc1_block.c in Libav 12.3, which allows attackers to cause a denial-of-service via a crafted aac file.

When was CVE-2018-18828 disclosed?

CVE-2018-18828 was first published in the National Vulnerability Database on October 30, 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-2018-18828 actively exploited?

CVE-2018-18828 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 48.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-18828?

CVE-2018-18828 has a CVSS v3 base score of 6.5 (NVD).

How do I remediate CVE-2018-18828?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-18828, 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.

Dependency Blast Radius

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CVE-2018-18828

📅 Published

🔄 Last Modified

🔗 References (2)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2018-18828?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (2)

Frequently asked(5)

Related CVEs(same CWE)