Every CVE Search/ Get API key

CVE-2021-4043

NULL Pointer Dereference in gpac/gpac

5.8 MediumPublic exploitFix available

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
None
User interaction
None

What an attacker can affect

Confidentiality
None
Integrity
None
Availability
Low

Exploit likelihood

4.61%Up 3.7 points since Feb 8, 2022
90%50%10%1%

What each source reports

CVE List Score used 5.8

NULL Pointer Dereference in gpac/gpac

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
CVE-2021-4043
CVSS 3.0
5.8 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Weakness
CWE-476
Updated
2026-11-04
EUVDEUVD-2021-33941 5.8

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
EUVD-2021-33941
CVSS 3.0
5.8 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Updated
2026-11-03
GitHub AdvisoriesGHSA-jm63-cmh5-jrcj 5.5

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
GHSA-jm63-cmh5-jrcj
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness
CWE-476
Updated
2026-11-02
NVD 5.5

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
CVE-2021-4043
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.0
5.8 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-476
Updated
2026-11-04
OSV 5.5

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
CVE-2021-4043
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-05
OSVDEBIAN-CVE-2021-4043 5.5

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
DEBIAN-CVE-2021-4043
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2021-4043 5.5

NULL Pointer Dereference in GitHub repository gpac/gpac prior to 1.1.0.

Record
UBUNTU-CVE-2021-4043
CVSS 3.1
5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS 3.0
5.8 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
gpac
Debian:11
 before 1.0.1+dfsg1-4+deb11u2, plus listed versions
1.0.1+dfsg1-41.0.1+dfsg1-4+deb11u1
1.0.1+dfsg1-4+deb11u2
gpac
Debian:11
From an advisory covering 106 CVEs
 before 1.0.1+dfsg1-4+deb11u2, plus listed versions
1.0.1+dfsg1-41.0.1+dfsg1-4+deb11u1
1.0.1+dfsg1-4+deb11u2

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
PoC in GitHubcyberark/PwnKit-Hunter2022-01-30

History

History
RecordedChangedSources
affectedCVE List, NVD, OSV
factsCVE List, EUVD
affected
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV, PoC in GitHub

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

In short

CVE-2021-4043 is a medium vulnerability (CVSS 5.8) in Gpac, published February 4, 2022. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 4.61%, the 91st percentile. Fixed in gpac 1.0.1+dfsg1-4+deb11u2.

References

Pages All vulnerabilities Browse Docs Sources Guide Get API key
MoveEnter Open