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CVE-2021-45876

30
FAUCET Score

CVE-2021-45876 describes an unauthenticated command injection vulnerability in multiple versions of GARO Wallbox GLB, GTB, and GTC devices. This critical flaw (CVSS 9.8) allows remote attackers to execute arbitrary commands by manipulating the 'url' parameter within the 'downloadAndUpdate' function, leveraging unfiltered user input during firmware updates. The vulnerability has a high potential for complete compromise of confidentiality, integrity, and availability, but there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
<= 185CPE matchmatch criteria
cpe:2.3:o:garo:wallbox_gtb_firmware:*:*:*:*:*:*:*:*
<= 185CPE matchmatch criteria
cpe:2.3:o:garo:wallbox_gtc_firmware:*:*:*:*:*:*:*:*
<= 185CPE matchmatch criteria
cpe:2.3:o:garo:wallbox_glb_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 58th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

github.com / delikely/advisory/tree/main/GARO
Third Party Advisory