CVE-2026-40972: VMware Spring Boot

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An attacker on the same network as the remote application may be able to utilize a timing attack to discover information about the remote secret. In extreme circumstances this could result in the attacker determining the secret and uploading changed classes, thereby achieving remote code execution in the remote application. Affected: Spring Boot 4.0.0–4.0.5 (fix 4.0.6), 3.5.0–3.5.13 (fix 3.5.14), 3.4.0–3.4.15 (fix 3.4.16), 3.3.0–3.3.18 (fix 3.3.19), 2.7.0–2.7.32 (fix 2.7.33); DevTools remote secret comparison. Versions that are no longer supported are also affected per vendor advisory.

Affected products

• VMware Spring Boot: before 2.7.33 (fixed in 2.7.33); from 3.3.0, before 3.3.19 (fixed in 3.3.19); from 3.4.0, before 3.4.16 (fixed in 3.4.16); from 3.5.0, before 3.5.14 (fixed in 3.5.14); from 4.0.0, before 4.0.6 (fixed in 4.0.6)

Published 2026-04-28. Last modified 2026-07-24.