Threats / Sophos / CVE-2022-3236
CVE-2022-3236
· EUVD no mirror located
· GCVE no mirror located
Verified 2026-09-19
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.
CISA KEV Yes · 2022-09-235EPSS 0.98905 (verify live)6CVSS 9.83CISA SSVC Exploitation: active · Automatable: no · Impact: total4Exploit Public PoC / detection · nuclei template13
01
Is it exploitable?
— the evidence, ranked above the scoreReported exploitation
36 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
CVSS 9.8 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) · Affected: Sophos, Firewall. Confirm exact fixed builds in the vendor advisory.CVSS — CNA-assigned (CVE.org), version 3.1, set at disclosure.
Weakness (CWE)
Mapped to CWE-94 Code Injection — weakness family: Injection.CWE assignment from the public NVD record (may be stale); the weakness class drives how the flaw is exploited.
CISA SSVC (triage disposition)
Exploitation: active · Automatable: no · Technical Impact: totalCISA's own stakeholder-specific triage inputs, published in the CVE record (CISA Coordinator role). NOTE: this is CISA's three decision points; the final Act/Attend/Track decision also requires a Mission & Well-being input not published here, so no overall decision is asserted.
Currency of the record
CISA added this to its KEV catalog the same day the CVE record was published.KEV lag = CISA-KEV dateAdded − CVE.org datePublished; a floor on how long the known-exploited flaw sat in the public record before the federal catalog listed it. Severity/weakness here is CNA- or CISA-assigned (current at disclosure), independent of NVD's analysis backlog.
Public exploit available
Public exploit tooling is catalogued for this CVE (a public proof-of-concept / detection template). Catalog entries: nuclei template. We link the catalog page(s) only — no payload or code is hosted or restated here.Link, never host — the catalog page is the source; basicsecurity.net does not redistribute payloads.
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
Coverage & confidence
— what we know, and what we don’tEstablished (cited)
Coverage gaps — stated, not hidden
Disclosure & credit2
Catalogued by SophosCNA
Credited with finding itNo finder is named in the public CVE record or the scanned vendor advisory — attribution scoped to the sources checked.
Found an error? Propose a correction.
A correction is a cited counter-claim — it must cite a source,
gets reviewed by a second human, and is never auto-applied. See the
correction convention and our identity
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