CVE-2024-36671

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to NVD's CVSS score.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2024-11-29. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Trending — 3 sources updated this week

Also known asEUVD-2024-36166 (ENISA EUVD) · GHSA-g724-p2vc-8mfg (GitHub Security Advisories)Source: ENISA EUVD

9.8EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.8%CVSS: 9.8Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

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
9.8CRITICALmedium confidence
EG Risk
59
EG Risk 59/100

EG Risk is EchelonGraph's 0–100 priority score. It fuses impact severity (EG Severity, the CVSS base score, never the KEV-floored or EPSS-lifted EG Score) with real-world exploitation and automatability, under weights EchelonGraph set by hand, so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner.

How it’s computed (value × EchelonGraph’s weight)
Severity98% × 45%
Impact severity (EG Severity): CVSS 9.8 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.8% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Attend at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.8%
EPSS %ILE
55th
KEV
Not listed

What the EG score is made of (scorer v4.0: the three questions the 0–10 score mixes, published apart · methodology)

The EG score (9.8): severity, escalated by confirmed exploitation. This CVE's 9.8 is its impact severity (EG Severity), not escalated.

EG Severity
9.8 CRITICALCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.GitHub Security Advisory CVSS
EG Likelihood
0.8% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-01). FIRST's exploitation probability, not an EchelonGraph model.
Confirmed exploitation
None on record (CISA KEV, EG-KEV Tier 1)Reported apart from the likelihood: an observed fact, not a probability.
EG Priority
SSVC Track at medium mission impactTrack at low or medium mission impact; Attend at high (mission-essential systems).CISA BOD 26-04: 3 days if the affected system is publicly exposed; 60 days if it is not.Each input and its source, and whom BOD 26-04 binds: the SSVC and BOD 26-04 blocks below.

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

November 29, 2024

Last Modified

April 15, 2026

Advisory Details (5)

Auto-updated Oct 8, 2026
Patch available. Sources: github_commit, github_pr.
GitHub pull request Patch Available

Next release snap

Patch available: nodemcu/nodemcu-firmware 3.0.0-release_20240225 (PR #3635 merged 2024-02-25)

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

Fix potential integer overflow in getnum and fix the negation overflo…

Fix merged in nodemcu/nodemcu-firmware PR #3634 on 2024-02-06 — awaiting tagged release

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

Fix potential integer overflow in getnum

Fix merged in nodemcu/nodemcu-firmware PR #3633 on 2024-02-18 — awaiting tagged release

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

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
GitHub commit

commit 193fe3593eb1 (nodemcu/nodemcu-firmware)

Fix landed in nodemcu/nodemcu-firmware commit 193fe3593eb1 — awaiting tagged release

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.

Data Freshness Timeline

(refreshed 20× in last 7d / 74× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 268 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 171 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  2. 2026-11-02 04:30 UTCEG score recompute
  3. 2026-11-02 04:30 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  4. 2026-11-01 04:35 UTCEG score recompute
  5. 2026-11-01 04:35 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  6. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  7. 2026-10-31 04:39 UTCEG score recompute
  8. 2026-10-31 04:39 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  9. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  10. 2026-10-30 04:44 UTCEG score recompute
  11. 2026-10-30 04:43 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  12. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  13. 2026-10-29 04:48 UTCEG score recompute
  14. 2026-10-29 04:47 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  15. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  16. 2026-10-28 04:46 UTCEG score recompute
  17. 2026-10-28 04:45 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  18. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  19. 2026-10-27 04:50 UTCEG score recompute
  20. 2026-10-27 04:49 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  21. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  22. 2026-10-26 00:34 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  23. 2026-10-25 17:08 UTCEG score recompute
  24. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  25. 2026-10-25 00:34 UTCEG score recompute
Show 72 more
  1. 2026-10-25 00:34 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  2. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  3. 2026-10-24 00:39 UTCEG score recompute
  4. 2026-10-24 00:39 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  5. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  6. 2026-10-23 00:43 UTCEG score recompute
  7. 2026-10-23 00:42 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  8. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  9. 2026-10-22 00:43 UTCEG score recompute
  10. 2026-10-22 00:43 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  11. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.8% · 55th percentile
  12. 2026-10-21 00:46 UTCEG score recompute
  13. 2026-10-21 00:46 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  14. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  15. 2026-10-20 00:50 UTCEG score recompute
  16. 2026-10-20 00:50 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  17. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  18. 2026-10-18 23:48 UTCEG score recompute
  19. 2026-10-18 23:48 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  20. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  21. 2026-10-18 07:12 UTCEG score recompute
  22. 2026-10-17 23:51 UTCEG score recompute
  23. 2026-10-17 23:50 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  24. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  25. 2026-10-16 23:54 UTCEG score recompute
  26. 2026-10-16 23:54 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  27. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  28. 2026-10-15 20:45 UTCEG score recompute
  29. 2026-10-15 20:45 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  30. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  31. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  32. 2026-10-14 14:53 UTCEG score recompute
  33. 2026-10-14 14:53 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  34. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  35. 2026-10-13 14:20 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  36. 2026-10-12 17:52 UTCEG score recompute
  37. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  38. 2026-10-12 14:10 UTCGHSA enrichmentGHSA-g724-p2vc-8mfg · GitHub severity CRITICAL · GitHub CVSS 9.8
  39. 2026-10-11 21:17 UTCEG score recompute
  40. 2026-10-11 16:09 UTCEG score recompute
  41. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  42. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  43. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  44. 2026-10-08 17:07 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  45. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  46. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  47. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  48. 2026-10-05 00:45 UTCOSV refresh
  49. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  50. 2026-10-03 14:24 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  51. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  52. 2026-09-30 19:46 UTCEG score recompute
  53. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  54. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  55. 2026-09-28 13:49 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  56. 2026-09-27 13:44 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  57. 2026-09-26 15:57 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  58. 2026-09-26 00:23 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  59. 2026-09-24 14:01 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  60. 2026-09-23 13:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  61. 2026-09-22 14:46 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  62. 2026-09-21 20:32 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  63. 2026-09-20 20:14 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  64. 2026-09-19 15:40 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  65. 2026-09-18 19:26 UTCEPSS rescoreEPSS 0.8% · 54th percentile
  66. 2026-09-16 14:06 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  67. 2026-09-15 09:24 UTCOSV refresh
  68. 2026-09-15 03:08 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  69. 2026-09-13 16:45 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  70. 2026-09-12 14:59 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  71. 2026-09-11 14:51 UTCEPSS rescoreEPSS 0.8% · 53rd percentile
  72. 2026-09-11 09:35 UTCEPSS rescoreEPSS 0.8% · 53rd percentile

Frequently asked(5)

What is CVE-2024-36671?
CVE-2024-36671 is a critical-severity vulnerability; its CVE record was 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 the CVE record for CVE-2024-36671 published?
The CVE record for CVE-2024-36671 was published on November 29, 2024. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of April 15, 2026; the record at its source may have been updated since.
Is CVE-2024-36671 actively exploited?
CVE-2024-36671 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.8% probability of exploitation in the next 30 days (55th percentile of EPSS-scored CVEs).
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?
A fix for CVE-2024-36671 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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