CVE-2022-36552Network attack vector

Unauthenticated system-file disclosure via DownloadFlash GET request

Published Aug 30, 2022 · Updated Jul 9, 2026

Information disclosure in Tenda AC6 v5.0 firmware 02.03.01.114 and earlier allows remote attackers to read system files via HTTP. The /cgi-bin/DownloadFlash handler returns firmware contents, including source code and system files, in response to a crafted GET request without authentication. Network access to the router web interface is sufficient, and the documented impact is limited to confidentiality.

CVSS severity7.5
High
EPSS probability0.70%
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 Tenda AC6 v5.0 firmware 02.03.01.114 and earlier allows remote attackers to read system files via HTTP. The /cgi-bin/DownloadFlash handler returns firmware contents, including source code and system files, in response to a crafted GET request without authentication. Network access to the router web interface is sufficient, and the documented impact is limited to confidentiality.

The record

CVE
CVE-2022-36552
Published
Aug 30, 2022
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-552, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 30, 2022CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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

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 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-552Files or Directories Accessible to External Parties
T1005Data from Local System

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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