How severe is CVE-2022-1040?

CVE-2022-1040 has a CVSS 3.1 base score of 9.8 (CRITICAL). EPSS estimates a 99.8% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-1040: Sophos Firewall Authentication Bypass

CISA Known Exploited Vulnerabilities

Sophos Firewall Authentication Bypass Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-03-31

Remediation due

2022-04-21

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2022-1040

Description

An authentication bypass vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v18.5 MR3 and older.

Severity

CVSS 3.1 · CNA9.8 CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC · CISA-ADP

Exploitationactive

Automatableyes

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Sophos	Sophos Firewall	unspecified to 18.5 MR3

References

3 Links

Other references

Record Details

Published

2022-03-25

Last updated

2025-10-21

Assigner (CNA)

Sophos

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.