CVE-2020-15069Sophos XG Firewall Buffer Overflow Vulnerability

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.

9.8 CRITICALEPSS 10.67%⚡ Known Exploited (CISA KEV)NVD: Analyzed

Last updated: 2026-06-17 02:55 UTC

OverviewCVSS details

9.8CRITICALCVSS 3.1

Score source: NVD
NVD status: Analyzed
Published: Jun 29, 2020
Assigner: mitre

Affected

xg firewall firmware (sophos)

Versions: 17.0 before 17.5 · 17.5
Fixed in: 17.5

All affected versions →

Exploitation

Public exploit: None listed
CISA KEV: Listed · Feb 6, 2025
KEV due date: Feb 27, 2025
Ransomware use: Unknown
SSVC: Exploitation active · Automatable yes · Impact total

EPSS · FIRST, scored Nov 7

10.67%chance of exploitation in 30 days

Higher than 95.83% of CVEs

CVSS 3.1 · NVD

9.8Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: None
User interaction: None
Scope: Unchanged
Confidentiality impact: High
Integrity impact: High
Availability impact: High

CVSS 2.0 · NVD

7.5High

AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack vector: Network
Attack complexity: Low
Authentication: None
Confidentiality impact: Partial
Integrity impact: Partial
Availability impact: Partial

NVD status: Analyzed

Overview Affected Products References

NVD CVE.org

Overview

Severity

Score	Severity	Version	Vector String
9.8	CRITICAL	3.1NVD	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5	HIGH	2.0NVD	AV:N/AC:L/Au:N/C:P/I:P/A:P

CISA required action

⚡ Known exploited · remediation due Feb 27, 2025

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

Details

CVE ID: CVE-2020-15069
Status: Analyzed
Assigner (CNA): mitre
Published: Jun 29, 2020
Last modified: 2026-06-17 02:55 UTC
Weaknesses: CWE-120

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 12:23 UTC.