CVE-2020-15069
Sophos XG Firewall Buffer Overflow Vulnerability
- Critical 9.8
- Exploited: added to CISA KEV 6 Feb 2025
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.
Key facts
- Published
- 29 Jun 2020
- Last changed
- 21 Oct 2025
- Assigned by
- mitre
- KEV added
- 6 Feb 2025
- KEV fix due
- 27 Feb 2025
- EPSS
- 10.392% likely to be exploited in the next 30 days, higher than 95.805% of CVEs (scores for 15 Nov 2026)
- SSVC (CISA)
- Exploitation: active; Automatable: yes; Technical impact: total
Severity scores
Each score is shown as its source gave it. They are not averaged or merged.
- 9.8CVSS 3.1, Criticalfrom CISA (ADP container)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.CISA KEV required action
Historical context and remediation
This reference retains the original CVE publication date. A recent record update does not mean a new attack occurred.
No separately sourced impact summary is available on this page yet. Consult the description, version data and dated exploitation evidence.
Version statuses below come from the CNA. An “unaffected” version is not necessarily a currently supported release or proof of a patch date. EPSS is a dated risk estimate, not a count of historical attacks.
Affected products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a |
|
Timeline
- 29 Jun 2020 Published
- 6 Feb 2025 CVE-2020-15069 added to CISA KEV
- 6 Feb 2025 Added to the CISA KEV catalogue