Critical severity · published Sep 24, 2026
CVE-2026-78308
Authentication Bypass in DIAEnergie
9.8
CVSS
0.4%
EPSS
No
On KEV
Description
Improper Authentication vulnerability in DIAEnergie allows Authentication Bypass.
This issue affects DIAEnergie: before 1.11.00.022.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 34% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DI
DIAEnergie · Deltaww
before 1.11.00.022 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-78308
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-78308
filecenter.deltaww.com
https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00014_DIAEnergie%20Multiple%20Vulberabilities%20(CVE-2026-78308%20~%2078313).pdf
pellera.com
https://pellera.com/blog/delta-electronics-diaenergie-unauthenticated-remote-code-execution-vulnerability-chain/
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