IRONSMITHINTEL
HIGHCVSS7.8
|
Actively Exploited
|CISA KEV|CVE-2020-9715|Auth: none — unauthenticated|Reboot: required|Manual only

Adobe Acrobat Use-After-Free Vulnerability

Adobe Acrobat contains a use-after-free vulnerability that allows for code execution

Published Aug 19, 2020 · Updated May 16, 2026
Why patchRisk explained in plain English
Worst-case scenarioIf unpatched

A local attacker, without authentication, can achieve full data confidentiality loss, arbitrary modification of data, complete denial of service or system unavailability. Federal agencies are required to remediate by 2026-04-27 under CISA BOD 22-01.

How the attack worksNo clicks needed

This is a Use After Free (CWE-416) vulnerability in Adobe Acrobat. Exploitation requires local access, low attack complexity, no authentication required, and user interaction required.

Am I affected?Quick check

Probably yes if any of these apply:

Endpoint Administrators
IT Security
Running acrobat dc: 15.006.30060 ≤ v ≤ 15.006.30523, 15.008.20082 ≤ v ≤ 20.009.20074, 17.011.30059 ≤ v ≤ 17.011.30171, 20.001.30002; acrobat reader dc: 15.006.30060 ≤ v ≤ 15.006.30523, 15.008.20082 ≤ v ≤ 20.009.20074, 17.011.30059 ≤ v ≤ 17.011.30171, 20.001.30002
Real-world incidentsWhat we've seen

Active exploitation documented in the wild. Threat-research write-up: https://blog.exodusintel.com/2021/04/20/analysis-of-a-use-after-free-vulnerability-in-adobe-acrobat-reader-dc/

How to patch

Manual remediation steps

Apply the Vendor Patch

This vulnerability is in the CISA Known Exploited Vulnerabilities catalog — apply the vendor's security update as soon as possible.

CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

References

    1
    Vendor advisory: https://helpx.adobe.com/security/products/acrobat/apsb20-48.html
    1
    NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2020-9715
    1
    CISA KEV: https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-9715
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