CVE-2020-3757Network attack vector

Arbitrary code execution via type confusion

Published Feb 13, 2020 · Updated Aug 4, 2024

Type confusion in affected Adobe Flash Player releases allows remote attackers to execute arbitrary code through crafted content. Adobe has not disclosed the affected code locus, the incompatible runtime types, or the input operation that triggers the confusion. Exploitation requires user interaction with attacker-controlled content and runs code in the context of the current user.

CVSS severity8.8
High
EPSS probability10.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in affected Adobe Flash Player releases allows remote attackers to execute arbitrary code through crafted content. Adobe has not disclosed the affected code locus, the incompatible runtime types, or the input operation that triggers the confusion. Exploitation requires user interaction with attacker-controlled content and runs code in the context of the current user.

The record

CVE
CVE-2020-3757
Published
Feb 13, 2020
Updated
Aug 4, 2024
Vendor
Adobe
Product
Adobe Flash Player
Classifications
CWE-843, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 13, 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=32.0.0.321 and earlier, 32.0.0.314 and earlier, 32.0.0.321 and earlier, and 32.0.0.255  and earlier versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Adobe · Adobe Flash Playerversion=32.0.0.321 and earlier, 32.0.0.314 and earlier, 32.0.0.321 and earlier, and 32.0.0.255  and earlier versions

Published CVSS scores

9.3NIST NVDAV:N/AC:M/Au:N/C:C/I:C/A:C
8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-843Access of Resource Using Incompatible Type ('Type Confusion')
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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