How severe is CVE-2021-45266?

CVE-2021-45266 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-45266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-45266?

CVE-2021-45266 affects Gpac. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-45266?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-45266 published?

CVE-2021-45266 was published on 2021-12-22 and last updated on 2026-06-17.

CVE-2021-45266

CVE-2021-45266 is a high-severity vulnerability in Gpac with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (61st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-476
Affected product: Gpac
Published: 2021-12-22
Last modified: 2026-06-17

Description

A null pointer dereference vulnerability exists in gpac 1.1.0 via the lsr_read_anim_values_ex function, which causes a segmentation fault and application crash.

Frequently asked questions

What is CVE-2021-45266?: A null pointer dereference vulnerability exists in gpac 1.1.0 via the lsr_read_anim_values_ex function, which causes a segmentation fault and application crash.
How severe is CVE-2021-45266?: CVE-2021-45266 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-45266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (61st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-45266?: CVE-2021-45266 affects Gpac. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-45266?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-45266 published?: CVE-2021-45266 was published on 2021-12-22 and last updated on 2026-06-17.

References

https://github.com/gpac/gpac/issues/1985

Affected products (1)

cpe:2.3:a:gpac:gpac:1.1.0:dev:*:*:*:*:*:*

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