Home/CVE/Sophos Firewall Code Injection Vulnerability
CVE

CVE-2022-3236

Sophos Firewall Code Injection Vulnerability

A code injection vulnerability in the User Portal and Webadmin allows a remote attacker to execute code in Sophos Firewall version v19.0 MR1 and older.

CRITICAL · CVSS 9.8 ⚠ CISA KEV EPSS 0.92841
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 0% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬢

Required Remediation

Apply updates per vendor instructions.

◆

Threat Actors Linked

1
actorSalt Typhoon
⬡

Weakness Classification

CWE-94Improper Control of Generation of Code ('Code Injection')
CWE-94Improper Control of Generation of Code ('Code Injection')
▤

Affected Products & Versions

1
sophos firewall<= 19.0.1
⚠

Public Exploits & PoCs

1
nucleiSophos Firewall <= 19.0 MR1 - Remote Code Executioncritical
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighDisable System Firewall
producthighSuspicious Program Location Whitelisted In Firewall Via Netsh.EXE
producthighNew Firewall Rule Added In Windows Firewall Exception List For Potential Suspicious Application
producthighAll Rules Have Been Deleted From The Windows Firewall Configuration
productmediumAzure Firewall Rule Collection Modified or Deleted
productmediumAzure Firewall Rule Configuration Modified or Deleted
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · security-alert@sophos.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD23 Sep 2022 · 01:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisaKEV-CVE-2022-3236
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-3236US Government Resource
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