CVE-2020-36921Public exploitNetwork attack vector

Unauthenticated log disclosure via unprotected web endpoints

Published Jan 6, 2026 · Updated Jan 6, 2026

Information disclosure in RED-V RXV A740 R running Android 5.1.1 allows remote attackers to read webserver logs without authentication. Several device web endpoints return the webserver log-file listing, including sensitive system-resource and debug entries, without checking authentication. Network access to the embedded web interface is sufficient; the disclosed logs expose device system and debugging information but do not permit data modification or service interruption.

CVSS severity6.9
Medium
EPSS probability0.43%
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 RED-V RXV A740 R running Android 5.1.1 allows remote attackers to read webserver logs without authentication. Several device web endpoints return the webserver log-file listing, including sensitive system-resource and debug entries, without checking authentication. Network access to the embedded web interface is sufficient; the disclosed logs expose device system and debugging information but do not permit data modification or service interruption.

The record

CVE
CVE-2020-36921
Published
Jan 6, 2026
Updated
Jan 6, 2026
Vendor
RED-V S.R.L.
Product
RED-V RXV A740 R
Classifications
CWE-548, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 6, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 6, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

RED-V S.R.L. · RED-V RXV A740 Rversion=5.1.1

Published CVSS scores

7.5VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA: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-548Exposure of Information Through Directory Listing
T1190Exploit Public-Facing Application

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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