How serious is CVE-2021-3497?

This vulnerability has a CVSS score of 7.8 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2021-3497?

Yes, proof-of-concept exploit code for CVE-2021-3497 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2021-3497?

CVE-2021-3497 affects gstreamer gstreamer. Check the full CVE details for specific version information.

How do I fix CVE-2021-3497?

To remediate CVE-2021-3497, check for security patches from gstreamer. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2021-3497

High

|7.8

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to potentially crash a system or execute malicious code by tricking it into processing specially crafted Matroska files. It occurs when the GStreamer software tries to handle errors in these files, leading to access of memory that has already been freed, which can happen if the software is not updated to the latest version.

Technical Description

GStreamer before 1.18.4 might access already-freed memory in error code paths when demuxing certain malformed Matroska files.

CVSS Vector Analysis

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactHigh

ScopeUnchanged

Vector String

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$2,684($1K-$5K)

Vendor Response

Grade FPatched in 1792 days

Quick Information

Published

Apr 19, 2021

almost 5 years ago

Last Modified

Mar 17, 2026

21 days ago

Vendor

gstreamer

Product

gstreamer

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