How severe is CVE-2021-22276?

CVE-2021-22276 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2021-22276 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-22276?

CVE-2021-22276 primarily affects Abb System Access Point 2.0 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-22276?

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

When was CVE-2021-22276 published?

CVE-2021-22276 was published on 2021-09-23 and last updated on 2026-06-17.

CVE-2021-22276

CVE-2021-22276 is a medium-severity vulnerability in Abb System Access Point 2.0 Firmware with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-354.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 4.3
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-354
Affected product: Abb System Access Point 2.0 Firmware
Published: 2021-09-23
Last modified: 2026-06-17

Description

The vulnerability allows a successful attacker to bypass the integrity check of FW uploaded to the free@home System Access Point.

Frequently asked questions

What is CVE-2021-22276?: The vulnerability allows a successful attacker to bypass the integrity check of FW uploaded to the free@home System Access Point.
How severe is CVE-2021-22276?: CVE-2021-22276 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2021-22276 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-22276?: CVE-2021-22276 primarily affects Abb System Access Point 2.0 Firmware. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-22276?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-22276 published?: CVE-2021-22276 was published on 2021-09-23 and last updated on 2026-06-17.

References

https://search.abb.com/library/Download.aspx?DocumentID=9AKK107992A6475&LanguageCode=en&DocumentPartId=&Action=Launch

Affected products (5)

cpe:2.3:o:abb:system_access_point_2.0_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:system_access_point_127v_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:wl-system_access_point_127v_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:wl-system_access_point_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:abb:wl-system_access_point_2.0_firmware:*:*:*:*:*:*:*:*

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