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CVE-2021-21856

HIGH
8.8
CVSS Score
Published: August 18, 2021 at 12:49 PM UTC
Updated: June 17, 2026 at 03:36 AM UTC
1 product affected across 1 vendorGpac

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Severity
HIGH8.8
Exploit prediction
EPSS 1%

Description

Multiple exploitable integer overflow vulnerabilities exist within the MPEG-4 decoding functionality of the GPAC Project on Advanced Content library v1.0.1. A specially crafted MPEG-4 input can cause an integer overflow due to unchecked addition arithmetic resulting in a heap-based buffer overflow that causes memory corruption. An attacker can convince a user to open a video to trigger this vulnerability.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Gpac· Gpac
95%
1.0.1GPAC Project Advanced Content commit a8a8d412dabcb129e695c3e7d861fcc81f608304, GPAC Project Advanced Content v1.0.1

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

x_refsource_MISCExploitTechnical DescriptionThird Party Advisory
Source: [email protected]
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1299

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-680CWE-119

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