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CVE-2021-34588

27
FAUCET Score

CVE-2021-34588 describes an unprotected data export vulnerability in Bender/ebee Charge Controllers, including models like cc612 and cc613. This high-severity vulnerability (CVSS 8.6) allows unauthenticated attackers to remotely access sensitive backup data due to an empty encryption key after a device reboot. While the vulnerability has no known public exploits or active exploitation, its ease of exploitation and potential for high confidentiality impact warrant attention. Community discussion and media coverage for this CVE are currently minimal.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.11.0, < 5.11.2CPE matchmatch criteria
cpe:2.3:o:bender:cc612_firmware:*:*:*:*:*:*:*:*
>= 5.12.0, < 5.12.5CPE matchmatch criteria
cpe:2.3:o:bender:cc612_firmware:*:*:*:*:*:*:*:*
>= 5.13.0, < 5.13.2CPE matchmatch criteria
cpe:2.3:o:bender:cc612_firmware:*:*:*:*:*:*:*:*
>= 5.20.0, < 5.20.2CPE matchmatch criteria
cpe:2.3:o:bender:cc612_firmware:*:*:*:*:*:*:*:*
>= 5.11.0, < 5.11.2CPE matchmatch criteria
cpe:2.3:o:bender:icc15xx_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.6HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.87%
Probability of exploitation in next 30 days
EPSS Percentile
55.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0087 is in the 30th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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

cert.vde.com / en/advisories/VDE-2021-047
Third Party Advisory