Is CVE-2020-15504 actively exploited?

No active exploitation of CVE-2020-15504 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2020-15504 be exploited remotely?

Yes. CVE-2020-15504 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2020-15504?

CVE-2020-15504 has a CVSS score of 9.8 (CRITICAL).

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CRITICAL

CVE-2020-15504

CWE-89Published: July 10, 2020· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

A SQL injection vulnerability in the user and admin web interfaces of Sophos XG Firewall v18.0 MR1 and older potentially allows an attacker to run arbitrary code remotely. The fix is built into the re-release of XG Firewall v18 MR-1 (named MR-1-Build396) and the v17.5 MR13 release. All other versions >= 17.0 have received a hotfix.

NVD Source

Technical Analysis

CVE-2020-15504 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-89): SQL injection vulnerabilities allow attackers to manipulate database queries, potentially exposing or modifying sensitive data.