CVE-2021-39823

Name: CVE-2021-39823
Creator: NVD / NIST
Published: 2021-09-27T16:15:09.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 4.12%

Last modified Jun 17, 2026

CVE-2021-39823 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Adobe svg-native-viewer 8182d14dfad5d1e10f53ed830328d7d9a3cfa96d and earlier versions are affected by a heap buffer overflow vulnerability due to insecure handling of a malicious .svg file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.. EPSS estimates a 4.12% chance of exploitation in the next 30 days.

Description

Adobe svg-native-viewer 8182d14dfad5d1e10f53ed830328d7d9a3cfa96d and earlier versions are affected by a heap buffer overflow vulnerability due to insecure handling of a malicious .svg file, potentially resulting in arbitrary code execution in the context of the current user. User interaction is required to exploit this vulnerability.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS Probability

4.12%

89.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-122

Affected Software

Vendor	Product	Versions
Adobe	Svg-Native-Viewer	<= 8182d14dfad5d1e10f53ed830328d7d9a3cfa96d

References

https://helpx.adobe.com/security/products/svg-native-viewer/apsb21-72.htmlPatch, Vendor Advisory
https://helpx.adobe.com/security/products/svg-native-viewer/apsb21-72.htmlPatch, Vendor Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39823?

How severe is CVE-2021-39823?

CVE-2021-39823 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 4.12% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39823?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-39823?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST