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CVE-2020-15069

CRITICAL9.8
CISA KEV

Published 2020-06-29 · Updated 2026-06-17 · Source cve@mitre.org

Summary

CVE-2020-15069 is a critical-severity (CVSS 9.8) vulnerability in Sophos XG Firewall. CISA added it to the Known Exploited Vulnerabilities catalog on February 6, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by February 27, 2025. CISA does not currently list it as used in ransomware campaigns. Sophos has 7 vulnerabilities in the KEV catalog, 2 of them linked to ransomware.

All 7 known-exploited Sophos vulnerabilities →

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.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-120CWE-120

CISA Known-Exploited Vulnerability

Product: Sophos — XG Firewall

Name: Sophos XG Firewall Buffer Overflow Vulnerability

Date added: 2025-02-06 · Due: 2025-02-27

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

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