CVE-2026-40823
HIGH 7A high privileged remote attacker can exploit an unauthenticated SQL Injection vulnerability in the DevSerialReset function due to improper neutralization of special elements in a SQL UPDATE command allowing for reading the whole database and changing values in a non critical table. This can result in a total loss of confidentiality and some loss of integrity.
ELEVATED IMPACT
Severe if exploited (CVSS 7), but no known exploitation and low modeled probability. Patch on a normal cadence.
Exploitation likelihood
0.2%chance of exploitation in 30 days · 15th percentile
○ In CISA KEV
○ Public exploit / PoC
Impact if exploited
7CVSS 4.0 · HIGH
- ConfidentialityHigh
- IntegrityLow
- AvailabilityNone
What an attacker needs
- ✓Access: Reachable over the network — no local access needed
- ⚠Privileges: Requires an admin / high-privilege account
- ✓User interaction: No user interaction needed
- ✓Complexity: No special conditions — reliably repeatable
- ✓Requirements: No special attack requirements
✓ lowers the bar for an attacker · ⚠ raises it
Affected
Vendors Mb Connect Line Helmholz
Products Mbconnect24 Mymbconnect24 Myrex24v2 Myrex24v2.Virtual
Weakness (CWE)
- CWE-89: SQL injection
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N