# CVE-2020-15069: Sophos XG Firewall Buffer Overflow

> Remote attackers can execute arbitrary code on Sophos XG Firewalls via a buffer overflow in the HTTP/S Bookmarks feature.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 6 Feb 2025 (CISA KEV)
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 29 Jun 2020
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-x7vj-wqq4-cq4v

## What is CVE-2020-15069?

CVE-2020-15069 is a critical memory corruption vulnerability in n/a, published on 29 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S Bookmarks feature for clientless access. Hotfix HF062020.1 was published for all firewalls running v17.x.

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

## Which versions are affected by CVE-2020-15069?

It affects 1 product.


Products: Sophos Xg Firewall Firmware.

## How do I fix CVE-2020-15069?

No fix has been published for CVE-2020-15069 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 27 Feb 2025.

## Is CVE-2020-15069 being exploited?

Yes. Attackers have exploited CVE-2020-15069 in the wild since at least 6 Feb 2025.

## Other vulnerabilities in n/a

- [CVE-2020-15504](https://insights.sbomify.com/CVE-2020-15504/): SQL injection in n/a (critical 9.8)
- [CVE-2022-3713](https://insights.sbomify.com/CVE-2022-3713/): Code injection in Sophos Firewall (high 8.8)
- [CVE-2020-17352](https://insights.sbomify.com/CVE-2020-17352/): Command injection in n/a (high 8.8)
- [CVE-2022-3226](https://insights.sbomify.com/CVE-2022-3226/): Command injection in Sophos Firewall (high 7.2)
- [CVE-2022-3696](https://insights.sbomify.com/CVE-2022-3696/): Code injection in Sophos Firewall (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-15069 and fix it if it is affected.

What it is: CVE-2020-15069 is a critical memory corruption vulnerability in n/a, published on 29 Jun 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2020-15069 in the wild since at least 6 Feb 2025.

Affected product: n/a. 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-2020-15069/ (Markdown: https://insights.sbomify.com/CVE-2020-15069/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-15069
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-15069
- OSV: https://osv.dev/vulnerability/CVE-2020-15069

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-15069/
Summaries are generated and may contain mistakes; the official description above is the record.