Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2022-1040

98
FAUCET Score

CVE-2022-1040 is a critical authentication bypass vulnerability affecting Sophos Firewall versions v18.5 MR3 and older, specifically impacting the User Portal and Webadmin interfaces. This flaw allows a remote, unauthenticated attacker to execute arbitrary code on the affected firewall. With a CVSS score of 9.8 (Critical) and an EPSS score indicating extremely high exploitability, this vulnerability poses a severe risk. It is actively exploited in the wild, with public exploit code available and significant community discussion, including reports of custom malware ("Pygmy Goat") being used in attacks.

Impacted Technologies

VendorProductVersion(s)CPE
<= 18.5.3CPE matchmatch criteria
cpe:2.3:o:sophos:sfos:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
99.80%
Probability of exploitation in next 30 days
EPSS Percentile
100.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
Added to KEV · Mar 31, 2022
Nuclei: CVE-2022-1040 · May 6, 2022
ExploitDB: EDB-51006 · Sep 2, 2022
This CVE's current EPSS score of 0.9980 is in the 100th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.html
ExploitThird Party AdvisoryVDB Entry
exploit-db.com / exploits/51006
ExploitThird Party AdvisoryVDB Entry
sophos.com / en-us/security-advisories/sophos-sa-20220325-sfos-rce
MitigationVendor Advisory