CVE-2023-5520

Out-of-bounds Read in gpac/gpac

4.0 MediumFix available

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: Low

Exploit likelihood

0.34%Up 0.3 points since Oct 12, 2023

What each source reports

CVE List Score used 4.0

Out-of-bounds Read in gpac/gpac

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: CVE-2023-5520
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

EUVDEUVD-2023-57833 4.0

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: EUVD-2023-57833
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-03

GitHub AdvisoriesGHSA-8x9m-4hhm-x696 4.0

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: GHSA-8x9m-4hhm-x696
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

NVD 7.7

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: CVE-2023-5520
CVSS 3.1: 7.7 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

OSV 4.0

Out-of-bounds Read in gpac/gpac

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: CVE-2023-5520
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness: CWE-125
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-5520 7.7

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: DEBIAN-CVE-2023-5520
CVSS 3.1: 7.7 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-5520 7.7

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2.

Record: UBUNTU-CVE-2023-5520
CVSS 3.1: 7.7 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
CVSS 3.0: 4.0 MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Updated: 2026-11-02

OSVMGASA-2025-0090 No score

Updated gpac packages fix security vulnerabilities

Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.2.2. (CVE-2023-5520) Stack-based Buffer Overflow in GitHub repository gpac/gpac prior to 2.3-DEV. (CVE-2024-0321) Out-of-bounds Read in GitHub repository gpac/gpac prior to 2.3-DEV. (CVE-2024-0322)

Record: MGASA-2025-0090
Updated: 2026-11-02

OSVUSN-7320-1 No score

gpac vulnerabilities

It was discovered that the GPAC MP4Box utility incorrectly handled certain AC3 files, which could lead to an out-of-bounds read. A remote attacker could use this issue to cause MP4Box to crash, resulting in a denial of service (system crash). This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2023-5520, CVE-2024-0322)

It was discovered that the GPAC MP4Box utility incorrectly handled certain malformed text files. If a user or automated system using MP4Box were tricked into opening a specially crafted RST file, an attacker could use this issue to cause a denial of service (system crash) or execute arbitrary code. (CVE-2024-0321)

Record: USN-7320-1
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`gpac` Debian:11	All versions, plus listed versions 1.0.1+dfsg1-41.0.1+dfsg1-4+deb11u11.0.1+dfsg1-4+deb11u21.0.1+dfsg1-4+deb11u31.0.1+dfsg1-5 Show 8 moreShow less 2.0.0+dfsg1-12.0.0+dfsg1-22.0.0+dfsg1-42.2.1+dfsg1-12.2.1+dfsg1-22.2.1+dfsg1-32.2.1+dfsg1-3.12.2.1+dfsg1-3.1~exp1	None known
`gpac` Mageia:9 From an advisory covering 3 CVEs	before 2.2.1-1.2.mga9.tainted	2.2.1-1.2.mga9.tainted
`gpac` Ubuntu:Pro:22.04:LTS	before 2.0.0+dfsg1-2ubuntu0.1~esm2, plus listed versions 1.0.1+dfsg1-41.0.1+dfsg1-52.0.0+dfsg1-2	2.0.0+dfsg1-2ubuntu0.1~esm2
`gpac` Ubuntu:Pro:24.04:LTS	before 2.2.1+dfsg1-3.1ubuntu0.1~esm2, plus listed versions 2.2.1+dfsg1-32.2.1+dfsg1-3.12.2.1+dfsg1-3.1build12.2.1+dfsg1-3.1build2	2.2.1+dfsg1-3.1ubuntu0.1~esm2
`gpac` Ubuntu:Pro:14.04:LTS From an advisory covering 3 CVEs	before 0.5.0+svn4288~dfsg1-4ubuntu1+esm2, plus listed versions 0.5.0+svn4288~dfsg1-1ubuntu10.5.0+svn4288~dfsg1-40.5.0+svn4288~dfsg1-4ubuntu10.5.0+svn4288~dfsg1-4ubuntu1+esm1	0.5.0+svn4288~dfsg1-4ubuntu1+esm2
`gpac` Ubuntu:Pro:16.04:LTS From an advisory covering 3 CVEs	before 0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2, plus listed versions 0.5.2-426-gc5ad4e4+dfsg5-1build10.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1	0.5.2-426-gc5ad4e4+dfsg5-1ubuntu0.1+esm2
`gpac` Ubuntu:Pro:18.04:LTS From an advisory covering 3 CVEs	before 0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1, plus listed versions 0.5.2-426-gc5ad4e4+dfsg5-30.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1	0.5.2-426-gc5ad4e4+dfsg5-3ubuntu0.1+esm1
`gpac` Ubuntu:Pro:20.04:LTS From an advisory covering 3 CVEs	before 0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2, plus listed versions 0.5.2-426-gc5ad4e4+dfsg5-4ubuntu10.5.2-426-gc5ad4e4+dfsg5-5	0.5.2-426-gc5ad4e4+dfsg5-5ubuntu0.1~esm2
`gpac` Ubuntu:Pro:22.04:LTS From an advisory covering 3 CVEs	before 2.0.0+dfsg1-2ubuntu0.1~esm2, plus listed versions 1.0.1+dfsg1-41.0.1+dfsg1-52.0.0+dfsg1-2	2.0.0+dfsg1-2ubuntu0.1~esm2
`gpac` Ubuntu:Pro:24.04:LTS From an advisory covering 3 CVEs	before 2.2.1+dfsg1-3.1ubuntu0.1~esm2, plus listed versions 2.2.1+dfsg1-32.2.1+dfsg1-3.12.2.1+dfsg1-3.1build12.2.1+dfsg1-3.1build2	2.2.1+dfsg1-3.1ubuntu0.1~esm2

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases, published	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-5520 is a medium vulnerability (CVSS 4.0) in Gpac, published October 11, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.34%, the 27th percentile. Fixed in gpac 2.0.0+dfsg1-2ubuntu0.1~esm2.

References

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