PatchSiren cyber security CVE debrief

CVE-2026-78308 Deltaww CVE debrief

CVE-2026-78308 is an authentication bypass vulnerability in DIAEnergie versions before 1.11.00.022. The vulnerability has a CVSS score of 9.8 and is considered critical. The CVE record was published on 2026-09-24T08:35:58.944Z and last modified on 2026-10-15T01:47:22.018Z. Defenders should assess exposure and prioritize upgrading to version 1.11.00.022 or later. The vulnerability affects DIAEnergie instances, allowing for potential authentication bypass attempts. It is crucial for defenders to verify exposure and consider upgrading to mitigate potential risks.

Vendor: Deltaww
Product: DIAEnergie
CVSS: CRITICAL 9.8
CISA KEV: Not listed in stored evidence
Original CVE published: 2026-09-24
Original CVE updated: 2026-10-15
Advisory published: 2026-09-24
Advisory updated: 2026-10-15

Who should care

Defenders responsible for DIAEnergie instances should assess exposure and prioritize upgrading to version 1.11.00.022 or later. Operators, platform administrators, vulnerability management teams, and security teams should review the vulnerability and its potential impact on their environments. They should verify exposure, review official advisories, and consider upgrading to mitigate potential authentication bypass attempts.

Why it matters

CVE-2026-78308 is a critical authentication bypass vulnerability in DIAEnergie versions before 1.11.00.022. Defenders should prioritize verifying exposure and upgrading to mitigate potential authentication bypass attempts.

Verify exposure of DIAEnergie instances
Upgrade to DIAEnergie version 1.11.00.022 or later
Monitor for potential authentication bypass attempts

Technical summary

The CVE record describes an improper authentication vulnerability in DIAEnergie, allowing for authentication bypass. The vulnerability affects DIAEnergie versions before 1.11.00.022. Defenders should prioritize verifying exposure of DIAEnergie instances and upgrading to version 1.11.00.022 or later. The vulnerability has a CVSS score of 9.8 and is considered critical. Official sources, such as the CVE Program and NIST NVD, provide details on the vulnerability and its impact. Limited information is available on exploitation or impact.

Defensive priority

Defenders should prioritize verifying exposure of DIAEnergie instances and upgrading to version 1.11.00.022 or later.

Recommended defensive actions

Verify DIAEnergie instance exposure and version
Upgrade to DIAEnergie version 1.11.00.022 or later
Monitor for potential authentication bypass attempts
Review compensating controls for exposed systems while remediation is scheduled and verified
Check relevant monitoring, detection, and logs for exposed assets that need extra review
Track exceptions, retest remediated assets, and close the item only after evidence is documented
Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record and source item provide details on the vulnerability, but limited information is available on exploitation or impact. Defenders should verify exposure of DIAEnergie instances and review official advisories for affected scope, severity, and vendor guidance. The CVE record has not been modified since publication, and defenders should rely on official sources for updates.

Sources and references

Verified primary and authoritative sources

CVE-2026-78308 CVE Program record
Publisher, destination, and source semantics verified

URL: https://www.cve.org/CVERecord?id=CVE-2026-78308

CVE Program - Official CVE Program record with source-provided CVE metadata.
CVE-2026-78308 NVD vulnerability detail
Publisher, destination, and source semantics verified

URL: https://nvd.nist.gov/vuln/detail/CVE-2026-78308

NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Authentication Bypass in DIAEnergie
Unverified legacy reference

URL: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/78xxx/CVE-2026-78308.json

cve_program_cvelist_v5
Source reference
Unverified legacy reference

URL: https://filecenter.deltaww.com/news/download/doc/Delta-PCSA-2026-00014_DIAEnergie%20Multiple%20Vulberabilities%20(CVE-2026-78308%20~%2078313).pdf

Supplemental source
Source reference
Unverified legacy reference

URL: https://pellera.com/blog/delta-electronics-diaenergie-unauthenticated-remote-code-execution-vulnerability-chain/

Supplemental source

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.