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CVE-2022-1040

9.8, critical Known exploited

Sophos Firewall Authentication Bypass Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab) CISA KEV catalogue (opens in a new tab)
CVSS
9.8, critical critical CVSS v3.1
EPSS, next 30 days
100% higher than 99.9% of scored CVEs
Exploitation
Confirmed in the wild
Published
25 Mar 20224 years ago

Known exploited

CISA added this to the Known Exploited Vulnerabilities Catalog on 31 Mar 2022. US federal agencies had to remediate by 21 Apr 2022, a deadline that has passed.

Required action. Apply updates per vendor instructions.

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.

Details

Vendor
Sophos
Product
Sophos Firewall
Weakness
n/a
Status
Analyzed
Updated
17 Jun 2026
Assigner
security-alert@sophos.com

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

References 4

Exploit code 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Sophos CVEs

Every Sophos CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2023-1671 Sophos Web Appliance Command Injection Vulnerability KEV EPSS 100% 9.8, critical
  • CVE-2022-3236 Sophos Firewall Code Injection Vulnerability KEV EPSS 99% 9.8, critical
  • CVE-2020-29574 CyberoamOS (CROS) SQL Injection Vulnerability KEV EPSS 5% 9.8, critical
  • CVE-2020-25223 Sophos SG UTM Remote Code Execution Vulnerability KEV EPSS 97% 9.8, critical
  • CVE-2020-15069 Sophos XG Firewall Buffer Overflow Vulnerability KEV EPSS 11% 9.8, critical
  • CVE-2020-12271 Sophos SFOS SQL Injection Vulnerability KEV EPSS 42% 9.8, critical

Beyond this page

Is CVE-2022-1040 in your network?

This page tells you how dangerous CVE-2022-1040 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

CVE-2022-1040 is in the CISA catalogue of exploited vulnerabilities: attackers are already exploiting it.

  • EXYS7600 OCELOT

    Find it before attackers do

    Ocelot scans your network on a schedule and reports every vulnerability it finds by its CVE identifier, with its CVSS score and how many of your hosts are affected. A finding like CVE-2022-1040 comes with the devices to patch.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

    Learn more about EXYS7950 KONDRA
Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.