How severe is CVE-2021-40575?

CVE-2021-40575 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-40575 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40575?

CVE-2021-40575 affects Gpac. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40575?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40575 published?

CVE-2021-40575 was published on 2022-01-13 and last updated on 2026-06-17.

CVE-2021-40575

CVE-2021-40575 is a medium-severity vulnerability in Gpac with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-476.

Key facts

Severity: Medium (CVSS 3.x base score 5.5)
CVSS v2: 4.3
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Gpac
Published: 2022-01-13
Last modified: 2026-06-17

Description

The binary MP4Box in Gpac 1.0.1 has a null pointer dereference vulnerability in the mpgviddmx_process function in reframe_mpgvid.c, which allows attackers to cause a denial of service. This vulnerability is possibly due to an incomplete fix for CVE-2021-40566.

Frequently asked questions

What is CVE-2021-40575?: The binary MP4Box in Gpac 1.0.1 has a null pointer dereference vulnerability in the mpgviddmx_process function in reframe_mpgvid.c, which allows attackers to cause a denial of service. This vulnerability is possibly due to an incomplete fix for CVE-2021-40566.
How severe is CVE-2021-40575?: CVE-2021-40575 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-40575 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40575?: CVE-2021-40575 affects Gpac. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40575?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40575 published?: CVE-2021-40575 was published on 2022-01-13 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:gpac:gpac:1.0.1:*:*:*:*:*:*:*

More vulnerabilities in Gpac

CVE-2023-46427 — Critical (CVSS 9.8): An issue was discovered in gpac version 2.3-DEV-rev588-g7edc40fee-master, allows remote attackers to execute arbitrary…
CVE-2024-0321 — Critical (CVSS 9.8): Stack-based Buffer Overflow in GitHub repository gpac/gpac prior to 2.3-DEV.
CVE-2023-46932 — Critical (CVSS 9.8): Heap Buffer Overflow vulnerability in GPAC version 2.3-DEV-rev617-g671976fcc-master, allows attackers to execute…
CVE-2023-2840 — Critical (CVSS 9.8): NULL Pointer Dereference in GitHub repository gpac/gpac prior to 2.2.2.
CVE-2022-36190 — Critical (CVSS 9.8): GPAC mp4box 2.1-DEV-revUNKNOWN-master has a use-after-free vulnerability in function gf_isom_dovi_config_get. This…
CVE-2022-1795 — Critical (CVSS 9.8): Use After Free in GitHub repository gpac/gpac prior to v2.1.0-DEV.

All CVEs affecting Gpac →

Other CWE-476 (NULL Pointer Dereference) vulnerabilities

CVE-2022-36648 — Critical (CVSS 10.0): The hardware emulation in the of_dpa_cmd_add_l2_flood of rocker device model in QEMU, as used in 7.0.0 and earlier,…
CVE-2020-14500 — Critical (CVSS 10.0): Secomea GateManager all versions prior to 9.2c, An attacker can send a negative value and overwrite arbitrary data.
CVE-2010-2495 — Critical (CVSS 10.0): The pppol2tp_xmit function in drivers/net/pppol2tp.c in the L2TP implementation in the Linux kernel before 2.6.34 does…
CVE-2026-46195 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: smb: client: validate dacloffset before building…
CVE-2026-31657 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by…
CVE-2026-31436 — Critical (CVSS 9.8): In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: fix possible wrong descriptor…

Browse all CWE-476 (NULL Pointer Dereference) vulnerabilities →