Threats / Sophos / CVE-2022-3236
CVE-2022-3236
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-06-22
Sophos Firewall vulnerability
A code injection vulnerability in Sophos Firewall's User Portal and Webadmin enables remote code execution. The flaw has been exploited in the wild.
Verdict
Today item — known-exploited.
This vulnerability presents critical risk due to active exploitation and high EPSS score. Unauthenticated attackers can inject and execute arbitrary code on affected firewall instances, potentially compromising network perimeter security and enabling lateral movement.
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
29 independent public reports of in-the-wild exploitation are cataloged.Distinct reporting sources (vendor, incident response, government); open them for the underlying claims.
Exploited in the wild
Listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-09-23).
Probability (EPSS)
EPSS 0.98905 — modeled likelihood of exploitation activity.EPSS is a daily-changing model output — open the source for today's value.
Severity / affected
Affected: Sophos, Firewall. Confirm exact fixed builds in the vendor advisory.
Weakness (CWE)
Mapped to CWE-94 Code Injection — weakness family: Injection.CWE assignment from the public NVD record; the weakness class drives how the flaw is exploited.
02
Who’s exploiting it?
— attribution turns risk into urgencyAttribution not established
No confirmed (advisory-backed) threat-actor attribution is established for this record. Absence of a named actor is not absence of compromise — see Coverage & confidence.
03
Why it matters
— the attack path, told twice: adversary, then board1
Front door — unauthenticated access narrative 1
Attacker
I identify the User Portal or Webadmin interface as an entry point and craft malicious code injection payloads to bypass input validation.
Business
Network perimeter security is directly compromised, allowing attackers to establish persistent access to the organization's firewall infrastructure.
2
Keys to the kingdom — privilege/identity takeover narrative 2
Attacker
I execute arbitrary code with firewall privileges to establish command and control, exfiltrate configuration data, or modify security policies.
Business
Sensitive network configurations, VPN credentials, and security policies become accessible to adversaries, enabling further network compromise.
3
Lateral reach — past segmentation narrative 3
Attacker
I use the compromised firewall as a pivot point to scan internal networks, deploy additional malware, or intercept encrypted traffic.
Business
Internal network segmentation fails, allowing attackers to move laterally toward critical assets and establish multi-stage attack infrastructure.
04
What to do
— defensible action- Remediate per the vendor advisory — confirm the fixed build for your version and verify exposure.1
Say it to the boardA vulnerability with this evidence profile is a defensible budget line, not a backlog ticket — fund the change against the proof above.
05