CVE-2026-40972 Details
Description
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.
A timing attack vulnerability has been identified in VMware Spring Boot versions 4.0.0 through 4.0.5, 3.5.0 through 3.5.13, 3.4.0 through 3.4.15, 3.3.0 through 3.3.18, and 2.7.0 through 2.7.32. This vulnerability allows an attacker on the same network as the remote application to exploit timing discrepancies to infer information about a remote secret. In severe cases, this could lead to the attacker determining the secret and uploading modified classes, thereby executing remote code in the application.
Users should upgrade to Spring Boot 4.0.6, 3.5.14, 3.4.16 (Enterprise Support Only), 3.3.19 (Enterprise Support Only) or 2.7.33 (Enterprise Support Only).
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 28, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://spring.io/security/cve-2026-40972 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-208 | Observable Timing Discrepancy | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| vmware spring boot | < 2.7.33 >= 3.3.0, < 3.3.19 >= 3.4.0, < 3.4.16 >= 3.5.0, < 3.5.14 >= 4.0.0, < 4.0.6 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 24, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 30, 2026 | Initial Analysis | [email protected] |
| Apr 28, 2026 | New CVE Received | [email protected] |