How severe is CVE-2021-40770?

CVE-2021-40770 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40770 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40770?

CVE-2021-40770 affects Adobe Prelude. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40770?

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-2021-40770 published?

CVE-2021-40770 was published on 2021-11-22 and last updated on 2026-06-17.

CVE-2021-40770

CVE-2021-40770 is a high-severity vulnerability in Adobe Prelude with a CVSS 3.x base score of 7.8. 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-119.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Adobe Prelude
Published: 2021-11-22
Last modified: 2026-06-17

Description

Adobe Prelude version 10.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious M4A file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required in that the victim must open a specially crafted file to exploit this vulnerability.

Frequently asked questions

What is CVE-2021-40770?: Adobe Prelude version 10.1 (and earlier) is affected by a memory corruption vulnerability due to insecure handling of a malicious M4A file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required in that the victim must open a specially crafted file to exploit this vulnerability.
How severe is CVE-2021-40770?: CVE-2021-40770 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40770 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40770?: CVE-2021-40770 affects Adobe Prelude. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40770?: 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-2021-40770 published?: CVE-2021-40770 was published on 2021-11-22 and last updated on 2026-06-17.

References

https://helpx.adobe.com/security/products/prelude/apsb21-96.html

Affected products (1)

cpe:2.3:a:adobe:prelude:*:*:*:*:*:*:*:*

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