CVE-2019-20801Public exploitNetwork attack vector

File disclosure via unauthenticated WebSocket access

Published May 17, 2020 · Updated Aug 5, 2024

Missing authorization in Readdle Documents before 6.9.7 for iOS allows remote attackers to read photos through its file-transfer server. The unauthenticated /rdwifidrive/web_socket_url endpoint exposes a WebSocket whose PREFETCHED_PHOTOS request returns photo paths, while /photos serves those files without a Session-Id and permits any origin. Exposure requires the file-transfer server to be running and a malicious site to execute in a browser that can reach the device.

CVSS severity5.3
Medium
EPSS probability1.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Readdle Documents before 6.9.7 for iOS allows remote attackers to read photos through its file-transfer server. The unauthenticated /rdwifidrive/web_socket_url endpoint exposes a WebSocket whose PREFETCHED_PHOTOS request returns photo paths, while /photos serves those files without a Session-Id and permits any origin. Exposure requires the file-transfer server to be running and a malicious site to execute in a browser that can reach the device.

The record

CVE
CVE-2019-20801
Published
May 17, 2020
Updated
Aug 5, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-863, CWE-862, T1409
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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

5.3NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/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.

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 exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
CWE-862Missing Authorization
T1409Stored Application Data

Public exploit references

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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