CVE-2026-102462 Eclipse Vert.x - Denial of Service

Eclipse Vert.x 4.0.0 to 4.5.34, 5.0.0 to 5.0.12, 5.1.0 to 5.1.9, and 5.2.0 contains an out-of-memory vulnerability caused by unbounded aggregation of inbound TDS packets in the Vert.x MSSQL client, letting malicious or man-in-the-middle SQL Servers cause client crashes before authentication completes.

CVSS base score 8.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
15 October 2026
Updated
15 October 2026
Weakness
CWE-400

Vendor fix

Update to the latest version of Eclipse Vert.x MSSQL client.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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