What is CVE-2020-11503?

CVE-2020-11503 is a critical-severity vulnerability in Sophos Sfos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-06-18.

How severe is CVE-2020-11503?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Buffer overflow in Sophos Sfos

CVE-2020-11503

A heap-based buffer overflow in the awarrensmtp component of Sophos XG Firewall v17.5 MR11 and older potentially allows an attacker to run arbitrary code remotely.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (70.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Sophos Sfos — versions 17.5
Sophos Xg_firewall
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

References

cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2020-11503?: CVE-2020-11503 is a critical-severity vulnerability in Sophos Sfos, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2020-06-18.
How severe is CVE-2020-11503?: Critical severity. CVSS v3 base score is 9.8 out of 10.