Exploited CVEs / Sophos / CVE-2020-15069
CVE-2020-15069
Sophos XG Firewall Buffer Overflow Vulnerability. Exploitation in the wild is confirmed by CISA, not predicted. Federal agencies were required to remediate by 2025-02-27 (that deadline has passed); treat that date as the outer bound for your own environment. Check the vendor security advisory for the fix.
Risk summary
Actively exploited Sophos XG Firewall vulnerability, Critical severity, CVSS 9.8. Added to the CISA KEV catalog 2025-02-06.
Senserva AI Opinion for CVE-2020-15069
The HTTP/S bookmark feature in Sophos XG Firewall contains a buffer overflow enabling remote code execution, and CISA confirmed active exploitation in February 2025, years after the 2020 disclosure. Perimeter firewalls are prime real estate: code execution there yields traffic interception and a launch point into the internal network. The late KEV addition signals attackers returning to old appliance bugs as newer ones get patched.
Do this: Verify Sophos XG firmware is current for CVE-2020-15069 and disable the HTTP/S bookmark feature if it is not needed.
AI-generated from public data, 2026-07-07. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for CVE-2020-15069
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Updated August 14, 2026. Data refreshed on every build from MSRC, CISA KEV, and FIRST EPSS.
Full tracking and change history for CVE-2020-15069
- Published
- 2025-02-06
- Last revised
- 2025-02-06
- Changes tracked
- 1
Published and last-revised dates are authoritative, from Microsoft MSRC (or the CISA KEV date-added). Senserva additionally records day-to-day changes from 2026-07-07, refreshed several times a day; the change count reflects that forward-only tracking.
- 2025-02-06 added to the CISA KEV catalog by CISA
- 2026-07-17 CVSS 0.0 to 9.8; EPSS first scored at 10.7%
Recorded by Senserva on the dates shown, from CISA KEV and FIRST EPSS. This is what moved and when, which neither the vendor advisory nor NVD publishes.
CISA required action
Federal (BOD 22-01) remediation due date: 2025-02-27 (past due).
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Official fix for CVE-2020-15069
Check the vendor's security advisory channel for the patched XG Firewall versions and workarounds.
Common questions about CVE-2020-15069
Is CVE-2020-15069 actively exploited?
Yes. CVE-2020-15069 was added to the CISA Known Exploited Vulnerabilities (KEV) catalog on 2025-02-06, which means exploitation in the wild has been confirmed, not predicted. Its EPSS 30-day exploitation probability is 11%.
What is the CISA deadline and required action for CVE-2020-15069?
CISA set the federal (BOD 22-01) remediation due date at 2025-02-27, which has passed; treat any unremediated system as overdue. The verbatim required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
What fixes CVE-2020-15069?
Check the vendor's security advisory for the patched XG Firewall versions and any workarounds. KEV listing makes this a fix-first item: patch it ahead of higher-CVSS issues nobody is exploiting.
Can I ask my own AI about CVE-2020-15069?
Yes. This page includes a free, ready-to-paste AI prompt containing CVE-2020-15069's key facts: severity, CVSS, EPSS, the KEV date, the CISA due date, and the required action. Copy it into Claude, ChatGPT, or Copilot; the data is refreshed twice a day (5 AM and 3 PM US Central).
Scope and sources
- More exploited Sophos CVEs
All Sophos exploited CVEs on one page: Sophos vulnerabilities actively exploited.
- Authoritative references
Every actively exploited CVE, searchable with due dates and CSV export: the exploited-CVE tracker. The newest additions: exploited this week.