CISA KEV · Known exploitedCritical

CVE-2022-1040

Sophos Firewall

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.

CVSS
9.8
EPSS
99.8%
100.0% percentile
CISA KEV
Listed
Published
2022.03.25
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability99.8%
Technical severityCVSS 9.8

Vulnerability overview

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.

Affected product and versions

Product
Sophos Firewall
Affected versions
unspecified, <= 18.5.3
Fixed versions
No verified fixed-version field is available yet

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

Apply updates per vendor instructions.

Due date: 2022.04.21
  1. 1
    Identify

    Confirm that Sophos Firewall and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-158
KEV added
2022.03.31
Ransomware use
미확인
CVE-2022-1040 — Sophos Firewall | SECUFOCUS NOW