CVE-2021-41573Network attack vector

Cross-file disclosure via stale shared-link authorization

Published Sep 29, 2021 · Updated Aug 4, 2024

Information disclosure in Hitachi Content Platform Anywhere 4.4.5 and 4.5.0 allows remote attackers with a stale link to read user files. After an upgrade, an unexpired shared link to a deleted file or folder remains authorized and permits browsing and downloading every file owned by its creator. Exploitation requires a link created on 4.3.x or earlier, shared and left active after its object was deleted, followed by an upgrade to 4.4.5 or 4.5.0.

CVSS severity7.5
High
EPSS probability0.82%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Hitachi Content Platform Anywhere 4.4.5 and 4.5.0 allows remote attackers with a stale link to read user files. After an upgrade, an unexpired shared link to a deleted file or folder remains authorized and permits browsing and downloading every file owned by its creator. Exploitation requires a link created on 4.3.x or earlier, shared and left active after its object was deleted, followed by an upgrade to 4.4.5 or 4.5.0.

The record

CVE
CVE-2021-41573
Published
Sep 29, 2021
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-284, T1213
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2021CVE 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

7.5HitachiCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.8HitachiAV:N/AC:L/Au:N/C:C/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 exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1213Data from Information Repositories

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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