# CVE-2026-40972

> Vulnerability · severity: **HIGH** (CVSS 7.5).

## 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.

## Key facts

- **CVE ID:** CVE-2026-40972
- **Published:** 2026-04-28
- **CVSS severity:** HIGH
- **CVSS base score:** 7.5
- **CWE codes:** CWE-208

## Affected products

- `vmware:spring_boot`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-40972

## Citation

> AI Analytics. CVE-2026-40972. Retrieved 2026-07-09 from https://api.ai-analytics.org/cve/CVE-2026-40972. Derived from NIST NVD. Licensed CC0.

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