CVE-2022-1040 (GCVE-0-2022-1040)
Vulnerability from cvelistv5 – Published: 2022-03-25 12:10 – Updated: 2025-10-21 23:15Summary
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.
Severity
9.8 (Critical)
SSVC
Exploitation: active
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-01-29 20:24 UTC
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://www.sophos.com/en-us/security-advisories/… | x_refsource_CONFIRM |
| http://packetstormsecurity.com/files/168046/Sopho… | x_refsource_MISC |
| https://www.exploit-db.com/exploits/51006 | x_refsource_MISC |
| https://www.cisa.gov/known-exploited-vulnerabilit… | government-resource |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Sophos | Sophos Firewall |
Affected:
unspecified , ≤ 18.5 MR3
(custom)
|
guessed |
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: f14ec036-57d3-4e99-b444-02ada8309f64
Exploited: Yes
Timestamps
First Seen: 2022-03-31
Asserted: 2022-03-31
Scope
Notes: KEV entry: Sophos Firewall Authentication Bypass Vulnerability | Affected: Sophos / Firewall | Description: An authentication bypass vulnerability in User Portal and Webadmin of Sophos Firewall allows for remote code execution. | Required action: Apply updates per vendor instructions. | Due date: 2022-04-21 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2022-1040
Evidence
Type: Vendor Report
Signal: Successful Exploitation
Confidence: 80%
Source: cisa-kev
Details
| Cwes | CWE-158 |
|---|---|
| Feed | CISA Known Exploited Vulnerabilities Catalog |
| Product | Firewall |
| Due Date | 2022-04-21 |
| Date Added | 2022-03-31 |
| Vendorproject | Sophos |
| Vulnerabilityname | Sophos Firewall Authentication Bypass Vulnerability |
| Knownransomwarecampaignuse | Unknown |
References
Created: 2026-02-02 13:25 UTC
| Updated: 2026-02-06 07:53 UTC
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 5a1d5dfd-706d-455f-9205-b8965d42bf7d
Exploited: Yes
Timestamps
First Seen: 2022-03-31
Asserted: 2022-03-31
Scope
Notes: KEVIntel entry: An authentication bypass vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v18.5... | Affected: Sophos / Sophos Firewall | CVSS: 9.8 (CRITICAL) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence
Type: Public Report
Signal: Successful Exploitation
Confidence: 70%
Source: kevintel
Details
| Feed | KEVIntel (kevintel.com) |
|---|---|
| Title | An authentication bypass vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v18.5... |
| Vendor | Sophos |
| Product | Sophos Firewall |
| Added Date | 2022-03-31T00:00:00.000Z |
| Cvss Score | 9.8 |
| Epss Score | None |
| Cvss Severity | CRITICAL |
| Epss Percentile | None |
| Used In Malware | unknown |
| Ahead Of Cisa Kev | None |
| Not Yet In Cisa Kev | False |
References
Created: 2026-06-23 11:13 UTC
| Updated: 2026-06-23 11:13 UTC
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"url": "https://www.exploit-db.com/exploits/51006"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security-alert@sophos.com",
"ID": "CVE-2022-1040",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Sophos Firewall",
"version": {
"version_data": [
{
"version_affected": "\u003c=",
"version_value": "18.5 MR3"
}
]
}
}
]
},
"vendor_name": "Sophos"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "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."
}
]
},
"impact": {
"cvss": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "n/a"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce",
"refsource": "CONFIRM",
"url": "https://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce"
},
{
"name": "http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.html",
"refsource": "MISC",
"url": "http://packetstormsecurity.com/files/168046/Sophos-XG115w-Firewall-17.0.10-MR-10-Authentication-Bypass.html"
},
{
"name": "https://www.exploit-db.com/exploits/51006",
"refsource": "MISC",
"url": "https://www.exploit-db.com/exploits/51006"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "526a354d-e866-4174-ae7d-bac848e5c4c5",
"assignerShortName": "Sophos",
"cveId": "CVE-2022-1040",
"datePublished": "2022-03-25T12:10:10.000Z",
"dateReserved": "2022-03-21T00:00:00.000Z",
"dateUpdated": "2025-10-21T23:15:43.601Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1"
}
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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