CVE-2024-36671

CRITICALNVD 9.89.8—

9.8

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

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 31.5%
KEV: Not listed

Published

November 29, 2024

Last Modified

April 15, 2026

Advisory Details (5)

Auto-updated May 19, 2026

No patch confirmed yet.

generic

Next release snap by marcelstoer · Pull Request #3635 · nodemcu/nodemcu-firmware · GitHub

https://github.com/nodemcu/nodemcu-firmware/pull/3635

generic

Fix potential integer overflow in getnum and fix the negation overflo… by Crispy-fried-chicken · Pull Request #3634 · nodemcu/nodemcu-firmware · GitHub

https://github.com/nodemcu/nodemcu-firmware/pull/3634

generic

Fix potential integer overflow in getnum by Crispy-fried-chicken · Pull Request #3633 · nodemcu/nodemcu-firmware · GitHub

https://github.com/nodemcu/nodemcu-firmware/pull/3633

generic

Integer overflow (leading to stack-based buffer overflow) in embedded lua_struct.c · Issue #3626 · nodemcu/nodemcu-firmware · GitHub

https://github.com/nodemcu/nodemcu-firmware/issues/3626

generic

Fix some bugs and problems in gossip (#3527) · nodemcu/nodemcu-firmware@193fe35 · GitHub

https://github.com/nodemcu/nodemcu-firmware/commit/193fe3593eb1537667179089535cdb7457327887#diff-5c3fa597431eda03ac3339ae6bf7f05e1a50d6fc7333679ec38e21b337cb6721

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-190Integer Overflow or Wraparound

Data Freshness Timeline

(refreshed 16× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-06 13:46 UTCepss_batch
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2026-05-31 05:25 UTCOSV refresh
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Frequently asked(5)

What is CVE-2024-36671?

CVE-2024-36671 is a critical vulnerability published on November 29, 2024. nodemcu before v3.0.0-release_20240225 was discovered to contain an integer overflow via the getnum function at /modules/struct.c.

When was CVE-2024-36671 disclosed?

CVE-2024-36671 was first published in the National Vulnerability Database on November 29, 2024, with the most recent update on April 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2024-36671 actively exploited?

CVE-2024-36671 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 31.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2024-36671?

CVE-2024-36671 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2024-36671?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2024-36671, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2024-36671

📅 Published

🔄 Last Modified

📋 Advisory Details (5)

Next release snap by marcelstoer · Pull Request #3635 · nodemcu/nodemcu-firmware · GitHub

Fix potential integer overflow in getnum and fix the negation overflo… by Crispy-fried-chicken · Pull Request #3634 · nodemcu/nodemcu-firmware · GitHub

Fix potential integer overflow in getnum by Crispy-fried-chicken · Pull Request #3633 · nodemcu/nodemcu-firmware · GitHub

Integer overflow (leading to stack-based buffer overflow) in embedded lua_struct.c · Issue #3626 · nodemcu/nodemcu-firmware · GitHub

Fix some bugs and problems in gossip (#3527) · nodemcu/nodemcu-firmware@193fe35 · GitHub

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2024-36671?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

Advisory Details (5)

Frequently asked(5)

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