CVE-2020-12447Public exploitNetwork attack vector

Sensitive file disclosure via encoded directory traversal

Published Apr 29, 2020 · Updated Aug 4, 2024

Path traversal in the Onkyo TX-NR585 1000-0000-000-0008-0000 web interface allows remote attackers to read sensitive device files. The built-in web server applies a weak path filter that accepts URL-encoded %2e%2e%2f sequences, letting crafted requests escape the web root. Network access to an exposed receiver web service is sufficient; no authentication or user interaction is required, and the demonstrated consequence is disclosure of /etc/shadow.

CVSS severity7.5
High
EPSS probability13.70%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in the Onkyo TX-NR585 1000-0000-000-0008-0000 web interface allows remote attackers to read sensitive device files. The built-in web server applies a weak path filter that accepts URL-encoded %2e%2e%2f sequences, letting crafted requests escape the web root. Network access to an exposed receiver web service is sufficient; no authentication or user interaction is required, and the demonstrated consequence is disclosure of /etc/shadow.

The record

CVE
CVE-2020-12447
Published
Apr 29, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-22, T1003.008
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 29, 2020CVE 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

7.5NIST 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 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-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1003.008OS Credential Dumping: /etc/passwd and /etc/shadow

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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