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CVE-2021-22276

19
FAUCET Score

CVE-2021-22276 is a medium-severity vulnerability affecting ABB free@home System Access Point devices, including various 127V and 2.0 firmware versions. It allows an unauthenticated attacker to bypass the integrity check of firmware uploaded to the system, potentially leading to unauthorized firmware modifications. While the attack requires user interaction and local access, a successful exploit could compromise the integrity of the device. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.6.4CPE matchmatch criteria
cpe:2.3:o:abb:system_access_point_2.0_firmware:*:*:*:*:*:*:*:*
< 2.6.4CPE matchmatch criteria
cpe:2.3:o:abb:system_access_point_127v_firmware:*:*:*:*:*:*:*:*
< 2.6.4CPE matchmatch criteria
cpe:2.3:o:abb:wl-system_access_point_127v_firmware:*:*:*:*:*:*:*:*
< 2.6.4CPE matchmatch criteria
cpe:2.3:o:abb:wl-system_access_point_firmware:*:*:*:*:*:*:*:*
< 2.6.4CPE matchmatch criteria
cpe:2.3:o:abb:wl-system_access_point_2.0_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.1MEDIUM

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
4.2
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.26%
Probability of exploitation in next 30 days
EPSS Percentile
17.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0026 is in the 21st percentile among its peer group of 5,758 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

search.abb.com / library/Download.aspx
Vendor Advisory