---
id: "CVE-2020-25223"
kind: "vulnerability"
aliases: ["CVE-2020-25223"]
title: "Sophos SG UTM: Sophos SG UTM Remote Code Execution Vulnerability"
severity: "critical"
cvss: 10.0
epss: 0.96753
exploited: true
status: "open"
category: "infrastructure"
products: [{"name": "Sophos SG UTM", "fixed": [], "affected": "", "ecosystem": "vendor"}]
ecosystems: ["vendor"]
tags: ["exploited", "firewall", "infrastructure", "self-hosted", "sg-utm", "sophos"]
not_affected_if: ["no-sophos-sg-utm"]
published_at: "2020-09-25T04:23:04+00:00"
first_seen_at: "2026-10-23T19:11:52+00:00"
updated_at: "2026-10-23T21:57:35+00:00"
sources: [{"source": "kev", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-25223", "first_seen_at": "2026-10-23T19:11:52+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2020-25223", "first_seen_at": "2026-10-23T19:13:44+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-25223", "first_seen_at": "2026-10-23T21:57:35+00:00"}]
---

# Sophos SG UTM: Sophos SG UTM Remote Code Execution Vulnerability

Sophos SG UTM firewalls have a remote code execution flaw in the WebAdmin interface. An attacker who can reach that interface can run code on the appliance, and CISA lists it as actively exploited.

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

## Affected

- vendor:Sophos SG UTM affected ? fixed ?

## Fix

Apply updates per vendor instructions (Sophos advisory not fetched; version numbers unknown).

## Timeline

- 2026-10-23T19:11:52+00:00 kev https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2020-25223
- 2026-10-23T19:13:44+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2020-25223
- 2026-10-23T21:57:35+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2020-25223

## From the sources

A remote code execution vulnerability exists in the WebAdmin of Sophos SG UTM.

CISA required action: Apply updates per vendor instructions.

---

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