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ExploitedIn CISA KEV

CVE-2022-1040

Exploitation confirmed. First attested on 2022-03-31 by CISA-ADP, CISA KEV, GCVE · kevintel.

  • Published2022-03-25

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2022-03-2512:15CVE publishedNVD
  2. 2022-03-31Added to the CISA KEV catalogCISA KEV
  3. 2022-03-31Listed as exploited by GCVEGCVE
  4. 2022-03-31Exploitation first reportedCISA KEV
  5. 2022-09-02Exploit-DB entryExploit-DB
  6. 2025-01-2920:24SSVC exploitation set to activeCISA-ADP

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-1040?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-1040?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Sophos sfos
BranchAffectedFixed in
18.5≤ 18.5.3no fix published

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Products declared by the CNA1 product

As Sophos, the CNA that assigned this CVE, declared them in the CVE record; versions as written.

  • Sophos Firewall
    Affected
    • ≤ 18.5 MR3no fix statedcustom

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2022-09-13

Fix

  1. CISA’s required action: Apply updates per vendor instructions.due 2022-04-21

Advisories and patches

Detection

read 2026-11-02 22:42 UTC
Nuclei template
available
ProjectDiscovery
Exploit-DB
EDB-51006
Exploit-DB
Proof-of-concept repositories
7 repositories, unverifiedkillvxk/CVE-2022-1040jam620/Sophos-VulnerabilityKeith-amateur/cve-2022-1040jackson5sec/CVE-2022-1040michealadams30/CVE-2022-1040
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

CISA Known Exploited Vulnerability

Date Added
2022-03-31
Patch Due Date
2022-04-21
Ransomware Use
Unknown
Required Action
Apply updates per vendor instructions.

Sources

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published
2022-03-25
Last Modified
2026-06-17
NVD status
Analyzed
GitHub Advisory
GHSA-9gcv-6rm7-vw3w

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.

Is CVE-2022-1040 actively exploited?

Yes. CVE-2022-1040 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-04-21.

What is the CVSS score for CVE-2022-1040?

CVE-2022-1040 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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