CVE-2022-1040

Name: CVE-2022-1040
Creator: NVD / NIST
Published: 2022-03-25T12:15:07.75+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 99.80%

Last modified Jun 17, 2026

CVE-2022-1040 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. CISA has confirmed active exploitation in the wild. EPSS estimates a 99.80% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

99.80%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Apr 21, 2022.

Affected Software

Vendor	Product	Versions
Sophos	Sfos	<= 18.5.3

References

http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/51006Exploit, Third Party Advisory, VDB Entry
https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rceMitigation, Vendor Advisory
http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.htmlExploit, Third Party Advisory, VDB Entry
https://www.exploit-db.com/exploits/51006Exploit, Third Party Advisory, VDB Entry
https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rceMitigation, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-1040US Government Resource

Timeline

Published: Mar 25, 2022
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2022-1040?

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.

How severe is CVE-2022-1040?

CVE-2022-1040 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 99.80% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2022-1040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-1040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST