CVE-2020-11558

CRITICAL

Affects 1 product across 1 vendor.

CVSS 3.19.8

EPSS1.5%

Percentile74th

PatchUnknown

CVSS Vector — Plain English Remotely exploitable over the network, low complexity, no authentication required, no user interaction needed, impact contained to the vulnerable component, full confidentiality impact, full integrity impact, full availability impact.

CWE Weakness Definitions

CWE-416: Use After Free

Software references memory after it has been freed, leading to corruption, crashes, or code execution.

◆ AI Analysis — automated analysis, not human-reviewed

A critical vulnerability in libgpac.a of GPAC 0.8.0, specifically in the audio_sample_entry_Read function, can lead to use-after-free conditions, potentially allowing for arbitrary code execution.

BSID: BS-2020-GLOBAL-144150-C • Model: /workspace/models/qwen2.5-coder-32b-instruct-bf16 • Confidence: HIGH

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Frequently Asked Questions

What is CVE-2020-11558?

A critical vulnerability in libgpac.a of GPAC 0.8.0, specifically in the audio_sample_entry_Read function, can lead to use-after-free conditions, potentially allowing for arbitrary code execution.

What is the CVSS score for CVE-2020-11558?

CVE-2020-11558 has CVSS 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS: 1.5%.

Is CVE-2020-11558 actively exploited?

No confirmed active exploitation of CVE-2020-11558 as of 2026-09-25.

How do I remediate CVE-2020-11558?

Priority: IMMEDIATE.

What systems are affected by CVE-2020-11558?

CVE-2020-11558 affects Gpac Gpac.

Vulnerability Details

CVE ID	`CVE-2020-11558`
BSID	`BS-2020-GLOBAL-144150-C` BreachSpider Global ID
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
Published	2020-04-05
Last Modified	2026-06-17
ICS Relevance	0%
Weakness (CWE)	Use After Free
Source	NVD

Official Description

An issue was discovered in libgpac.a in GPAC 0.8.0, as demonstrated by MP4Box. audio_sample_entry_Read in isomedia/box_code_base.c does not properly decide when to make gf_isom_box_del calls. This leads to various use-after-free outcomes involving mdia_Read, gf_isom_delete_movie, and gf_isom_parse_movie_boxes.

Source: NIST NVD / MITRE CVE Database

Attack Vector Analysis — CITED Relevance

An attacker can exploit this vulnerability by crafting a specially crafted MP4 file that, when processed by MP4Box, triggers improper memory management leading to use-after-free conditions.

Exploitation Likelihood: CRITICAL

Affected Products

Vendor	Product	Affected Versions
Gpac	Gpac	`0.8.0`

Remediation

No official vendor advisory link on record. See the CVE record →

Threat Intelligence

● Threat Intelligence Validated: October 2026 | Threat Age: 2384 Days

CISA known-exploited	Not in KEV catalog
Public Exploit	Not confirmed
PoC Code	Not confirmed

AI Enrichment Record — provenance & audit hash

Model	`/workspace/models/qwen2.5-coder-32b-instruct-bf16`
Confidence	HIGH
Enriched At	2026-05-24
SHA-512 Audit Hash	`0c3534ad4329b2f8a902776bd488dd5c715a511e6377339f15a0cdd762ca58f69b1546960633a1786322cee3855cf80ee724619b3ed357e3bf8377deb9191c52`

Related CVEs affecting Gpac

CVE-2022-1795 9.8 Use After Free in GitHub repository gpac/gpac prior to v2.1.0-DEV. CVE-2018-13006 9.8 An issue was discovered in MP4Box in GPAC 0.7.1. There is a heap-based buffer... CVE-2018-13005 9.8 An issue was discovered in MP4Box in GPAC 0.7.1. The function urn_Read in iso... CVE-2021-28300 9.8 NULL Pointer Dereference in the "isomedia/track.c" module's "MergeTrack()" fu... CVE-2022-36190 9.8 GPAC mp4box 2.1-DEV-revUNKNOWN-master has a use-after-free vulnerability in f...

View all Gpac CVEs →

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