What is CVE-2021-42726?

CVE-2021-42726 is a high-severity vulnerability in Adobe Bridge, classified under CWE-788. CVSS score: 7.8/10. Published 2021-11-16.

How severe is CVE-2021-42726?

High severity. CVSS v3 base score is 7.8 out of 10.

Buffer overflow in Adobe Bridge

CVE-2021-42726

Adobe Bridge version 11.1.1 (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 to exploit this vulnerability.

Published 2021-11-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.023 (83.0th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: +0.001

Affected products

Weakness classification (CWE)

References

helpx.adobe.com/security/products/bridge/apsb21-94.html (Vendor Advisory)

Frequently asked questions

What is CVE-2021-42726?: CVE-2021-42726 is a high-severity vulnerability in Adobe Bridge, classified under CWE-788. CVSS score: 7.8/10. Published 2021-11-16.
How severe is CVE-2021-42726?: High severity. CVSS v3 base score is 7.8 out of 10.