CVE-2021-3185

CRITICALNVD 9.89.8—Trending — 3 sources updated this week

9.8

A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause the stack to be smashed, memory corruption and possibly code execution.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 73.2%
KEV: Not listed

Published

January 26, 2021

Last Modified

November 21, 2024

References (4)

secalert@redhathttps://bugzilla.redhat.com/show_bug.cgi?id=1917192
secalert@redhathttps://security.gentoo.org/glsa/202208-31
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1917192
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-31

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 11× 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.

2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 21:37 UTCEG score recompute
2026-05-26 21:37 UTCGHSA enrichment
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
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-3185?

CVE-2021-3185 is a critical vulnerability published on January 26, 2021. A flaw was found in the gstreamer h264 component of gst-plugins-bad before v1.18.1 where when parsing a h264 header, an attacker could cause the stack to be smashed, memory corruption and possibly code execution.

When was CVE-2021-3185 disclosed?

CVE-2021-3185 was first published in the National Vulnerability Database on January 26, 2021, 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-2021-3185 actively exploited?

CVE-2021-3185 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-3185?

CVE-2021-3185 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-3185?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-3185, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-3185

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CVE-2021-3185

📅 Published

🔄 Last Modified

🔗 References (4)