ClosedPatched

Sophos XG Firewall: XG Firewall Buffer Overflow Vulnerability

Sophos XG Firewall

Sophos XG Firewall contains a buffer overflow vulnerability that allows for remote code execution via the "HTTP/S bookmark" feature. Added to CISA KEV on 2025-02-06.

Why this severity: CVSS 9.8 (CISA ADP, v3.1); actively exploited (CISA KEV)

Started: Feb 6, 2025
Closed: Feb 6, 2025
CVE: CVE-2020-15069

Follow this incident

Updated Feb 6, 2025

Affected

See vendor advisory / CISA notes (versions not always listed in KEV feed)

Fixed in

See vendor advisory linked in sources

Timeline1

Feb 6, 2025
CISA added CVE-2020-15069 to the KEV catalog (due 2025-02-27).

Advisories3

Notes & caveats

Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025).

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