CVE-2022-28955Public exploitNetwork attack vector

Unauthenticated file listing via unguarded SharePort pages

Published May 18, 2022 · Updated Aug 3, 2024

Improper authentication in D-Link DIR-816L firmware 2.06.B01 allows remote attackers to read shared-file listings without logging in. The SharePort Web Access interface serves direct requests to /webaccess/category_view.php and /webaccess/folder_view.php without enforcing its login gate. An attacker with network access to the router web service can enumerate shared folders and categories; published evidence does not establish file modification or service interruption.

CVSS severity7.5
High
EPSS probability39.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in D-Link DIR-816L firmware 2.06.B01 allows remote attackers to read shared-file listings without logging in. The SharePort Web Access interface serves direct requests to /webaccess/category_view.php and /webaccess/folder_view.php without enforcing its login gate. An attacker with network access to the router web service can enumerate shared folders and categories; published evidence does not establish file modification or service interruption.

The record

CVE
CVE-2022-28955
Published
May 18, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 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 exploitPublished

Weakness, pattern, technique

CWE-287Improper Authentication

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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