How severe is CVE-2022-3236?

CVE-2022-3236 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-3236 being actively exploited?

Yes. CVE-2022-3236 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-23, which means active exploitation has been confirmed. It should be prioritised for remediation.

What products are affected by CVE-2022-3236?

CVE-2022-3236 affects Sophos Firewall. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-3236?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.

Does CVE-2022-3236 have an EU (EUVD) identifier?

Yes. CVE-2022-3236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-42644. It is also flagged as exploited in the EUVD (since 2022-09-23).

When was CVE-2022-3236 published?

CVE-2022-3236 was published on 2022-09-23 and last updated on 2026-06-17.

CVE-2022-3236

CVE-2022-3236 is a critical-severity vulnerability in Sophos Firewall with a CVSS 3.x base score of 9.8. It is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, confirming it has been exploited in the wild (added 2022-09-23). The underlying weakness is classified as CWE-94.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 99% (100th percentile)
Actively exploited: Yes — listed in CISA KEV (added 2022-09-23)
EU (EUVD) id: EUVD-2022-42644
EU exploitation: Flagged exploited in the ENISA EU Vulnerability Database (since 2022-09-23)
Weakness: CWE-94
Affected product: Sophos Firewall
Published: 2022-09-23
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2022-3236?: 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.
How severe is CVE-2022-3236?: CVE-2022-3236 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-3236 being actively exploited?: Yes. CVE-2022-3236 is on CISA's Known Exploited Vulnerabilities (KEV) catalog, added on 2022-09-23, which means active exploitation has been confirmed. It should be prioritised for remediation.
What products are affected by CVE-2022-3236?: CVE-2022-3236 affects Sophos Firewall. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-3236?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Because this CVE is known to be actively exploited, treat remediation as urgent — CISA KEV typically sets a short remediation deadline.
Does CVE-2022-3236 have an EU (EUVD) identifier?: Yes. CVE-2022-3236 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2022-42644. It is also flagged as exploited in the EUVD (since 2022-09-23).
When was CVE-2022-3236 published?: CVE-2022-3236 was published on 2022-09-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:sophos:firewall:*:*:*:*:*:*:*:*

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