CVE-2026-78311 Overview
CVE-2026-78311 is a SQL injection vulnerability [CWE-89] affecting Delta Electronics DIAEnergie, an industrial energy management platform. The flaw allows an authenticated attacker to inject arbitrary SQL statements through network-accessible application inputs. Successful exploitation compromises database confidentiality, integrity, and availability. Delta Electronics has addressed the issue in DIAEnergie version 1.11.00.022.
Critical Impact
Authenticated network attackers can execute arbitrary SQL queries against the DIAEnergie backend database, enabling data theft, unauthorized record modification, and potential disruption of energy monitoring operations.
Affected Products
- Delta Electronics DIAEnergie versions prior to 1.11.00.022
Discovery Timeline
- 2026-09-24 - CVE-2026-78311 published to NVD
- 2026-09-24 - Last updated in NVD database
Technical Details for CVE-2026-78311
Vulnerability Analysis
The vulnerability resides in DIAEnergie, a web-based industrial energy management system developed by Delta Electronics. The application fails to properly sanitize or parameterize user-supplied input before incorporating it into SQL queries. An authenticated attacker with low-level privileges can send crafted HTTP requests containing malicious SQL fragments to vulnerable endpoints. The backend database executes these fragments as part of the intended query. This grants the attacker the ability to read, modify, or delete records outside the application's intended authorization boundary. In an industrial context, such tampering can corrupt energy consumption telemetry and billing records.
Root Cause
The root cause is improper neutralization of special elements used in a SQL command [CWE-89]. DIAEnergie concatenates untrusted request parameters directly into database queries rather than using prepared statements or bound parameters. Input validation routines do not reject SQL metacharacters such as single quotes, comment markers, or statement terminators before query execution.
Attack Vector
Exploitation requires network access to the DIAEnergie web interface and valid, low-privilege credentials. The attacker submits a specially crafted request to a vulnerable endpoint with SQL payloads embedded in parameters processed by the backend. User interaction is not required. See the Delta Security Advisory for vendor-specific technical details on the affected components.
No verified public exploit code is available for CVE-2026-78311 at the time of publication. The vulnerability mechanism follows standard SQL injection patterns against unparameterized query construction. Refer to the vendor advisory for component-level details.
Detection Methods for CVE-2026-78311
Indicators of Compromise
- Web server access logs containing SQL metacharacters such as ', --, ;, UNION SELECT, or OR 1=1 in DIAEnergie request parameters.
- Database error messages returned to the HTTP client, which may indicate probing attempts against vulnerable endpoints.
- Unusual outbound data transfers or high-volume queries originating from the DIAEnergie application service account.
- Unexpected modification or deletion of records in DIAEnergie energy telemetry, user, or configuration tables.
Detection Strategies
- Deploy a web application firewall (WAF) with signatures tuned to SQL injection patterns targeting DIAEnergie URL paths.
- Enable database audit logging to capture query text, source account, and originating session for post-event analysis.
- Correlate authentication events with subsequent SQL error spikes to identify credentialed abuse by low-privilege users.
Monitoring Recommendations
- Monitor the DIAEnergie host for anomalous process behavior, file writes, and outbound network connections from the database service.
- Alert on administrative actions performed by non-administrative user accounts in DIAEnergie.
- Track failed and successful logins to DIAEnergie to detect credential stuffing or brute-force attempts that precede exploitation.
How to Mitigate CVE-2026-78311
Immediate Actions Required
- Upgrade DIAEnergie to version 1.11.00.022 or later as published in the Delta Electronics security advisory.
- Restrict network access to the DIAEnergie web interface to trusted operator networks using firewall rules or VPN gating.
- Rotate credentials for all DIAEnergie accounts, especially any shared or default low-privilege accounts.
- Review database and application logs for signs of prior exploitation attempts.
Patch Information
Delta Electronics has released DIAEnergie 1.11.00.022, which remediates CVE-2026-78311 along with related issues CVE-2026-78308 through CVE-2026-78313. Download the fixed release and installation guidance from the Delta Security Advisory PCSA-2026-00014.
Workarounds
- Place DIAEnergie behind a reverse proxy or WAF configured to block SQL injection payloads until patching is complete.
- Segment the DIAEnergie server into an isolated OT network zone with strict ingress controls.
- Enforce the principle of least privilege for the database account used by DIAEnergie, limiting write and schema-modification rights where feasible.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
