CVE-2020-3802Network attack vector

Code execution via use-after-free

Published Mar 25, 2020 · Updated Aug 4, 2024

Use-after-free in Adobe Acrobat and Reader 2015, 2017, and DC releases allows remote attackers to execute code through a crafted document. Adobe identifies the defect only as a use-after-free and does not disclose the affected parser, object lifetime error, or input structure that triggers stale-memory access in builds through 2015.006.30510, 2017.011.30158, and 2020.006.20034. Exploitation requires a user to open malicious content, and successful code runs with the privileges of the current user.

CVSS severity8.8
High
EPSS probability4.53%
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 Acrobat and Reader 2015, 2017, and DC releases allows remote attackers to execute code through a crafted document. Adobe identifies the defect only as a use-after-free and does not disclose the affected parser, object lifetime error, or input structure that triggers stale-memory access in builds through 2015.006.30510, 2017.011.30158, and 2020.006.20034. Exploitation requires a user to open malicious content, and successful code runs with the privileges of the current user.

The record

CVE
CVE-2020-3802
Published
Mar 25, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1204.002, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 25, 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

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

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
T1204.002Malicious File
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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