Vulnerability in Vercel Next.js
CVE-2025-32421
Next.js is a React framework for building full-stack web applications. Versions prior to 14.2.24 and 15.1.6 have a race-condition vulnerability. This issue only affects the Pages Router under certain misconfigurations, causing normal endpo…
Vulnerability class: Race Condition
EPSS: 0.007 (47.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N.
Affected products
- Vercel Next.js — versions < 14.2.24, >= 15.0.0, < 15.1.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-32421?
- CVE-2025-32421 is a low-severity vulnerability in Vercel Next.js, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 3.7/10. Published 2025-05-14.
- How severe is CVE-2025-32421?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2025-32421 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.