CVE-2020-21688
HIGH
8.8
CVSS Score
Published: August 10, 2021 at 08:19 PM UTC
Updated: June 17, 2026 at 03:03 AM UTC
2 products affected across 2 vendorsDebian LinuxFFMPEG
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Severity
HIGH8.8
Exploit prediction
EPSS 2%
Description
A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCExploitIssue TrackingPatchVendor Advisory
Source: [email protected]
https://trac.ffmpeg.org/ticket/8186Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2021/dsa-4998CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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