How severe is CVE-2022-28704?

CVE-2022-28704 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2022-28704 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-28704?

CVE-2022-28704 primarily affects Rakuten Casa. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-28704?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2022-28704 published?

CVE-2022-28704 was published on 2022-06-13 and last updated on 2026-06-17.

CVE-2022-28704

CVE-2022-28704 is a high-severity vulnerability in Rakuten Casa with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 9.0
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Rakuten Casa
Published: 2022-06-13
Last modified: 2026-06-17

Description

Improper access control vulnerability in Rakuten Casa version AP_F_V1_4_1 or AP_F_V2_0_0 allows a remote attacker to log in with the root privilege and perform an arbitrary operation if the product is in its default settings in which is set to accept SSH connections from the WAN side, and is also connected to the Internet with the authentication information unchanged from the default settings.

Frequently asked questions

What is CVE-2022-28704?: Improper access control vulnerability in Rakuten Casa version AP_F_V1_4_1 or AP_F_V2_0_0 allows a remote attacker to log in with the root privilege and perform an arbitrary operation if the product is in its default settings in which is set to accept SSH connections from the WAN side, and is also connected to the Internet with the authentication information unchanged from the default settings.
How severe is CVE-2022-28704?: CVE-2022-28704 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2022-28704 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-28704?: CVE-2022-28704 primarily affects Rakuten Casa. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-28704?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-28704 published?: CVE-2022-28704 was published on 2022-06-13 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:rakuten:casa:ap_f_v1_4_1:*:*:*:*:*:*:*
cpe:2.3:a:rakuten:casa:ap_f_v2_0_0:*:*:*:*:*:*:*

More vulnerabilities in Rakuten Casa

CVE-2022-29525 — Critical (CVSS 9.8): Rakuten Casa version AP_F_V1_4_1 or AP_F_V2_0_0 uses a hard-coded credential which may allow a remote unauthenticated…
CVE-2022-26834 — High (CVSS 7.5): Improper access control vulnerability in Rakuten Casa version AP_F_V1_4_1 or AP_F_V2_0_0 allows a remote attacker to…

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