CVE-2020-9633Network attack vector

Arbitrary code execution via use-after-free

Published Jun 12, 2020 · Updated Aug 4, 2024

Use-after-free in Adobe Flash Player Desktop Runtime 32.0.0.371 and earlier allows remote attackers to execute arbitrary code. Adobe has not disclosed the affected component, freed object, or lifetime-management operation that permits stale memory to be reused. Exploitation requires vulnerable Flash content to be processed; Edge and Internet Explorer builds are affected through 32.0.0.330.

CVSS severity9.8
Critical
EPSS probability7.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Adobe Flash Player Desktop Runtime 32.0.0.371 and earlier allows remote attackers to execute arbitrary code. Adobe has not disclosed the affected component, freed object, or lifetime-management operation that permits stale memory to be reused. Exploitation requires vulnerable Flash content to be processed; Edge and Internet Explorer builds are affected through 32.0.0.330.

The record

CVE
CVE-2020-9633
Published
Jun 12, 2020
Updated
Aug 4, 2024
Vendor
Adobe
Product
Adobe Flash Player
Classifications
CWE-416, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=32.0.0.371 and earlier, 32.0.0.371 and earlier, and 32.0.0.330 and earlier versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Flash Playerversion=32.0.0.371 and earlier, 32.0.0.371 and earlier, and 32.0.0.330 and earlier versions

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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