---
id: "CVE-2020-15069"
kind: "vulnerability"
aliases: ["CVE-2020-15069"]
title: "sophos xg firewall firmware: Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S\u2026"
severity: "critical"
cvss: 9.8
epss: null
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Sophos XG Firewall", "fixed": [], "affected": "", "ecosystem": "vendor"}, {"name": "sophos xg firewall firmware", "fixed": ["17.5"], "affected": ">= 17.0, < 17.5", "ecosystem": "vendor"}, {"name": "sophos xg firewall firmware", "fixed": [], "affected": "= 17.5", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "infrastructure", "self-hosted", "sophos", "xg-firewall"]
not_affected_if: ["unknown"]
published_at: "2020-06-29T18:15:12+00:00"
first_seen_at: "2026-10-23T19:11:51+00:00"
updated_at: "2026-10-23T22:29:05+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-15069", "first_seen_at": "2026-10-23T19:11:51+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-15069", "first_seen_at": "2026-10-23T22:29:05+00:00"}]
---

# sophos xg firewall firmware: Sophos XG Firewall 17.x through v17.5 MR12 allows a Buffer Overflow and remote code execution via the HTTP/S…

Sophos XG Firewall has a buffer overflow in its HTTP/S bookmark feature that allows remote code execution. CISA lists it in the Known Exploited Vulnerabilities catalog, so attacks in the wild are confirmed.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- vendor:Sophos XG Firewall affected ? fixed ?
- vendor:sophos xg firewall firmware affected >= 17.0, < 17.5 fixed 17.5
- vendor:sophos xg firewall firmware affected = 17.5 fixed ?

## How to check

Check the firewall firmware version against Sophos advisories; the sources do not list affected or fixed versions.
Confirm whether the HTTP/S bookmark feature is in use.

## Fix

Apply the mitigation or fixed firmware per the vendor instructions; the sources do not name a version.
If no mitigation is available, discontinue use of the product as CISA requires.

## Timeline

- 2026-10-23T19:11:51+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-15069
- 2026-10-23T22:29:05+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-15069

## From the sources

Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature.

CISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_