CVE-2026-8124Public exploit

Local memory exhaustion via unchecked sidx reference count

Published May 8, 2026 · Updated May 8, 2026

Uncontrolled allocation in GPAC 26.02.0 and earlier allows local users to consume excessive memory with a crafted MP4 file. The sidx_box_read function trusts the 16-bit nb_refs value from an sidx box and allocates its reference array before checking whether the box contains that many entries. Repeated or concurrent processing can interrupt service through transient memory exhaustion, but the allocation is freed after parsing fails.

CVSS severity3.3
Low
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uncontrolled allocation in GPAC 26.02.0 and earlier allows local users to consume excessive memory with a crafted MP4 file. The sidx_box_read function trusts the 16-bit nb_refs value from an sidx box and allocates its reference array before checking whether the box contains that many entries. Repeated or concurrent processing can interrupt service through transient memory exhaustion, but the allocation is freed after parsing fails.

The record

CVE
CVE-2026-8124
Published
May 8, 2026
Updated
May 8, 2026
Vendor
GPAC Project
Product
GPAC
Classifications
CWE-400, CWE-770, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=26.02

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

GPAC Project · GPACversion=26.02

Published CVSS scores

3.3UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
3.3VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
1.9VulDBCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
3.3VulDBCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C
1.7VulDBAV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:OF/RC:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-400Uncontrolled Resource Consumption
CWE-770Allocation of Resources Without Limits or Throttling
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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