dbcve.org
IpadosOperating system · Apple

CVE-2020-9777

MEDIUM · 5.3 CVSS v3.1 Published 2020-04-01
Fix available
A fix is available. Upgrade to 13.4 or later.
See remediation →
62/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
An issue existed in the selection of video file by Mail. The issue was fixed by selecting the latest version of a video. This issue is fixed in iOS 13.4 and iPadOS 13.4. Cropped videos may not be shared properly via Mail.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A logic flaw in Apple's Mail app caused it to select an older version of a video file instead of the latest version when sharing via email. This resulted in cropped videos not being shared properly through Mail, potentially leading to users sharing unintended video versions.

MitigationUpdate iOS and iPadOS to version 13.4 or later to receive the patch. For enterprise environments, ensure all managed devices have applied this OS update.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IpadosOperating system
Affected:< 13.4
Iphone OsOperating system
Affected:< 13.4

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check the iOS or iPadOS version installed on the device
    Go to Settings > General > About on the device and look at the Version field
    Affected if The version number is less than 13.4 (for example, 13.3.1, 13.3, 13.2, etc.)
  2. Confirm the Mail app is in use for video sharing
    Check if the Mail application is used as a sharing destination for videos from the Photos app or other applications
    Affected if Mail is actively used as a method to share video files via email
  3. Verify video sharing functionality is available
    Attempt to share a video file through the iOS Share sheet and verify that Mail appears as a sharing option
    Affected if The Share sheet shows Mail as an option for sending videos

A device is affected if it runs iOS or iPadOS versions earlier than 13.4 and the user shares videos through the Mail application, as the logic flaw causes older video versions to be selected instead of the latest ones.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to 13.4 or later
Fixed in 13.4
Interim mitigation

Update iOS and iPadOS to version 13.4 or later to receive the patch. For enterprise environments, ensure all managed devices have applied this OS update.

Fix this in Ipados Scoped from the published advisory
  • Consultation2.0 h
  • Testing4.0 h
  • Review / QA2.0 h
8.0 hours of engineering $1,360
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,176.

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-9777 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data