What’s Vulnerable › Vulnerabilities

CVE-2024-36671

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-11-29 · updated 2026-06-17
• Weakness: CWE-190

Description

nodemcu before v3.0.0-release_20240225 was discovered to contain an integer overflow via the getnum function at /modules/struct.c.

Affected products

• Nodemcu: before 3.0.0-release_20240225 — fixed in 3.0.0-release_20240225

How to fix

Upgrade to a fixed version: Nodemcu 3.0.0-release_20240225. Check the vendor advisory for mitigations.

References

• https://github.com/nodemcu/nodemcu-firmware/commit/193fe3593eb1537667179089535cdb7457327887#diff-5c3fa597431eda03ac3339ae6bf7f05e1a50d6fc7333679ec38e21b337cb6721
• https://github.com/nodemcu/nodemcu-firmware/issues/3626
• https://github.com/nodemcu/nodemcu-firmware/pull/3633
• https://github.com/nodemcu/nodemcu-firmware/pull/3634
• https://github.com/nodemcu/nodemcu-firmware/pull/3635

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