CVE-2020-9784Network attack vector

Cross-site download setting abuse via malicious iframe

Published Apr 1, 2020 · Updated Aug 4, 2024

Logic issue in Safari before 13.1 allows remote attackers to alter another website’s download settings through a malicious iframe. Safari’s iframe download handling fails to enforce origin restrictions, allowing an embedded frame to apply another site’s download settings. Exploitation requires a victim to load attacker-controlled web content; impact is limited to download-setting integrity, with no stated confidentiality or availability effect.

CVSS severity4.3
Medium
EPSS probability0.86%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Logic issue in Safari before 13.1 allows remote attackers to alter another website’s download settings through a malicious iframe. Safari’s iframe download handling fails to enforce origin restrictions, allowing an embedded frame to apply another site’s download settings. Exploitation requires a victim to load attacker-controlled web content; impact is limited to download-setting integrity, with no stated confidentiality or availability effect.

The record

CVE
CVE-2020-9784
Published
Apr 1, 2020
Updated
Aug 4, 2024
Vendor
Apple
Product
Safari
Classifications
T1189
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 1, 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?

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

  1. Affected versionversion=unspecified <Safari 13.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · Safariversion=unspecified <Safari 13.1

Published CVSS scores

4.3NVDAV:N/AC:M/Au:N/C:N/I:P/A:N
4.3NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

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.

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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

T1189Drive-by Compromise

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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