# CVE-2021-43072: Memory corruption in FortiAnalyzer

> Attackers can execute unauthorized code via crafted CLI commands using tFTP, affecting Fortinet network security products.

- **Severity:** Medium 6.3 (`CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Jul 2023
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-69j8-frw9-cp4h

## What is CVE-2021-43072?

CVE-2021-43072 is a medium-severity memory corruption vulnerability in Fortinet Fortianalyzer, published on 18 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A buffer copy without checking size of input ('classic buffer overflow') in Fortinet FortiAnalyzer version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiManager version 7.0.2 and below, version 6.4.7 and below, version 6.2.9 and below, version 6.0.11 and below, version 5.6.11 and below, FortiOS version 7.0.0 through 7.0.4, 6.4.0 through 6.4.8, 6.2.0 through 6.2.10, 6.0.x and FortiProxy version 7.0.0 through 7.0.3, 2.0.0 through 2.0.8, 1.2.x, 1.1.x and 1.0.x allows attacker to execute unauthorized code or commands via crafted CLI `execute restore image` and `execute certificate remote` operations with the tFTP protocol.

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2021-43072?

It affects 4 products.


Products: Fortinet Fortianalyzer, Fortinet Fortimanager, Fortinet Fortios, Fortinet Fortiproxy.

## How do I fix CVE-2021-43072?

No fix has been published for CVE-2021-43072 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-43072 being exploited?

There is no known exploitation of CVE-2021-43072 in the wild and no public exploit code.

## Other vulnerabilities in Fortinet Fortianalyzer

- [CVE-2026-24858](https://insights.sbomify.com/CVE-2026-24858/): Fortinet Multiple Products Authentication Bypass Using an Alternate Path or Channel (critical 9.4, exploited in the wild)
- [CVE-2023-25610](https://insights.sbomify.com/CVE-2023-25610/): Memory corruption in FortiAnalyzer (critical 9.3)
- [CVE-2021-32603](https://insights.sbomify.com/CVE-2021-32603/): Server-side request forgery in Fortinet FortiAnalyzer, FortiManager (high 8.8)
- [CVE-2020-12817](https://insights.sbomify.com/CVE-2020-12817/): Cross-site scripting in Fortinet FortiAnalyzer (high 8.8)
- [CVE-2024-48886](https://insights.sbomify.com/CVE-2024-48886/): Auth bypass in FortiOS (high 8.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-43072 and fix it if it is affected.

What it is: CVE-2021-43072 is a medium-severity memory corruption vulnerability in Fortinet Fortianalyzer, published on 18 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-43072 in the wild and no public exploit code.

Affected product: Fortinet Fortianalyzer. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2021-43072/ (Markdown: https://insights.sbomify.com/CVE-2021-43072/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-43072
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-43072
- OSV: https://osv.dev/vulnerability/CVE-2021-43072

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-43072/
Summaries are generated and may contain mistakes; the official description above is the record.