How severe is CVE-2022-0331?

CVE-2022-0331 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2022-0331 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-0331?

CVE-2022-0331 affects Sophos Sfos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-0331?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-0331 published?

CVE-2022-0331 was published on 2022-03-29 and last updated on 2026-06-17.

CVE-2022-0331

CVE-2022-0331 is a medium-severity vulnerability in Sophos Sfos with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v2: 5.0
EPSS exploit prediction: 1% (70th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Sophos Sfos
Published: 2022-03-29
Last modified: 2026-06-17

Description

An information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall version v18.5 MR2 and older.

Frequently asked questions

What is CVE-2022-0331?: An information disclosure vulnerability in Webadmin allows an unauthenticated remote attacker to read the device serial number in Sophos Firewall version v18.5 MR2 and older.
How severe is CVE-2022-0331?: CVE-2022-0331 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2022-0331 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (70th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-0331?: CVE-2022-0331 affects Sophos Sfos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-0331?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-0331 published?: CVE-2022-0331 was published on 2022-03-29 and last updated on 2026-06-17.

References

https://www.sophos.com/en-us/security-advisories/sophos-sa-20220328-sfos-18-5-3

Affected products (1)

cpe:2.3:o:sophos:sfos:*:*:*:*:*:*:*:*

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