What is CVE-2022-1040?

CVE-2022-1040 is a critical-severity vulnerability in Sophos Firewall. CVSS score: 9.8/10. Published 2022-03-25.

How severe is CVE-2022-1040?

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

Is CVE-2022-1040 known to be exploited?

Yes. CVE-2022-1040 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-31), indicating it is being actively exploited. 37 public proof-of-concept repositories are indexed.

Vulnerability in Sophos Firewall

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.

EPSS: 0.944 (100.0th 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 Firewall — versions unspecified

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-31. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-04-21.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce (x_refsource_CONFIRM)
packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authe… (x_refsource_MISC)
www.exploit-db.com/exploits/51006 (x_refsource_MISC)

Frequently asked questions

What is CVE-2022-1040?: CVE-2022-1040 is a critical-severity vulnerability in Sophos Firewall. CVSS score: 9.8/10. Published 2022-03-25.
How severe is CVE-2022-1040?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2022-1040 known to be exploited?: Yes. CVE-2022-1040 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-31), indicating it is being actively exploited. 37 public proof-of-concept repositories are indexed.