CVE-2024-38926

CRITICALNVD 9.89.8
EchelonGraph scoreMEDIUM confidence

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

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 0.6% (48th percentile of EPSS-scored CVEs). GitHub Security Advisory CVSS 9.1 is lower than this score; a lower GitHub score revises it only when its advisory is newer than the CVE record's last change, and this advisory (published 2024-12-07) is not newer than that change (2024-12-17), so it does not.

Triggered by: Headline CVSS from NVD CVSS v3
Sources: EPSS, GitHub Security Advisory, NVD CVSS v3
Elevated

Also known asEUVD-2024-37641 (ENISA EUVD) · GHSA-p5wj-x33c-f49r (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).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.8Exploit: No code on recordExposed services: Not assessed

A fix is available — apply it.

Open Robotics Robotic Operating System 2 (ROS2) and Nav2 humble versions were discovered to contain a use-after-free via the nav2_amcl process. This vulnerability is triggered via remotely sending a request for change the value of dynamic-parameter /amcl z_short.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
75
EG Risk 75/100

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.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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
0.6%
EPSS %ILE
48th
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.NVD CVSS v3 · CVSS v3.0 or v3.1
EG Likelihood
0.6% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-11-11). 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: 14 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 public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (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)14 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 partial (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

December 6, 2024

Last Modified

December 17, 2024

Advisory Details (3)

Auto-updated Oct 10, 2026
Patch available. Sources: github_pr.
Web page

18 bugs (UAF) in `nav2_amcl` by setting dynamic parameters · Issue #4379 · ros-navigation/navigation2 · GitHub

https://github.com/ros-navigation/navigation2/issues/4379
GitHub pull request Patch Available

[amcl] reset laser_scan_filter before reinit

Patch available: ros-navigation/navigation2 1.3.0 (PR #4397 merged 2024-06-05)

https://github.com/ros-navigation/navigation2/pull/4397
Web page

GitHub - GoesM/ROS-CVE-CNVDs: record and public CVE/CNVD IDs discovered by my works · GitHub

https://github.com/GoesM/ROS-CVE-CNVDs

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 57× 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 its CVE.org record (CNA or CISA ADP). 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). "EchelonGraph re-scored" is our own recompute of this CVE's score, not an update from a source, and is not counted in the refreshes above. Most recent first.

Showing the most recent 100 of 276 rows 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. None are among the latest 100 rows. The 176 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-11-13 16:47 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-11-12 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  3. 2026-11-12 15:33 UTCEchelonGraph re-scored
  4. 2026-11-12 15:33 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  5. 2026-11-11 16:35 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  6. 2026-11-11 13:15 UTCEchelonGraph re-scored
  7. 2026-11-11 13:15 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  8. 2026-11-10 16:38 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-11-10 10:54 UTCEchelonGraph re-scored
  10. 2026-11-10 10:54 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  11. 2026-11-09 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-11-09 08:36 UTCEchelonGraph re-scored
  13. 2026-11-09 08:36 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  14. 2026-11-08 16:36 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-11-08 06:19 UTCEchelonGraph re-scored
  16. 2026-11-08 06:19 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-11-07 16:36 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-11-07 04:00 UTCEchelonGraph re-scored
  19. 2026-11-07 04:00 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-11-06 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  21. 2026-11-06 01:42 UTCEchelonGraph re-scored
  22. 2026-11-06 01:42 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  23. 2026-11-05 16:34 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  24. 2026-11-04 23:24 UTCEchelonGraph re-scored
  25. 2026-11-04 23:24 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
Show 75 more
  1. 2026-11-04 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  2. 2026-11-03 21:05 UTCEchelonGraph re-scored
  3. 2026-11-03 21:05 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  4. 2026-11-03 16:42 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  5. 2026-11-02 18:47 UTCEchelonGraph re-scored
  6. 2026-11-02 18:47 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  7. 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  8. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  9. 2026-11-01 16:28 UTCEchelonGraph re-scored
  10. 2026-11-01 16:28 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  11. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  12. 2026-10-31 14:09 UTCEchelonGraph re-scored
  13. 2026-10-31 14:09 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  14. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  15. 2026-10-30 11:50 UTCEchelonGraph re-scored
  16. 2026-10-30 11:50 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  17. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.6% · 48th percentile
  18. 2026-10-29 09:32 UTCEchelonGraph re-scored
  19. 2026-10-29 09:32 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  20. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  21. 2026-10-28 07:14 UTCEchelonGraph re-scored
  22. 2026-10-28 07:14 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  23. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  24. 2026-10-27 04:56 UTCEchelonGraph re-scored
  25. 2026-10-27 04:56 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  26. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  27. 2026-10-25 22:28 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  28. 2026-10-25 17:06 UTCEchelonGraph re-scored
  29. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  30. 2026-10-24 20:08 UTCEchelonGraph re-scored
  31. 2026-10-24 20:08 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  32. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  33. 2026-10-23 17:50 UTCEchelonGraph re-scored
  34. 2026-10-23 17:49 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  35. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  36. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  37. 2026-10-22 15:32 UTCEchelonGraph re-scored
  38. 2026-10-22 15:32 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  39. 2026-10-21 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  40. 2026-10-21 13:13 UTCEchelonGraph re-scored
  41. 2026-10-21 13:13 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  42. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  43. 2026-10-20 10:39 UTCEchelonGraph re-scored
  44. 2026-10-20 10:38 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  45. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.6% · 47th percentile
  46. 2026-10-19 08:19 UTCEchelonGraph re-scored
  47. 2026-10-19 08:19 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  48. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  49. 2026-10-18 06:01 UTCEchelonGraph re-scored
  50. 2026-10-18 06:01 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  51. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  52. 2026-10-17 03:42 UTCEchelonGraph re-scored
  53. 2026-10-17 03:42 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  54. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  55. 2026-10-16 01:22 UTCEchelonGraph re-scored
  56. 2026-10-16 01:22 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  57. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  58. 2026-10-14 20:50 UTCEchelonGraph re-scored
  59. 2026-10-14 20:50 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  60. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  61. 2026-10-13 16:43 UTCEchelonGraph re-scored
  62. 2026-10-13 16:43 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  63. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  64. 2026-10-12 17:50 UTCEchelonGraph re-scored
  65. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  66. 2026-10-12 14:02 UTCGHSA enrichmentGHSA-p5wj-x33c-f49r · GitHub severity CRITICAL · GitHub CVSS 9.1
  67. 2026-10-11 21:15 UTCEchelonGraph re-scored
  68. 2026-10-11 16:07 UTCEchelonGraph re-scored
  69. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
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  73. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  74. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.6% · 46th percentile
  75. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.6% · 46th percentile

Frequently asked(5)

What is CVE-2024-38926?
CVE-2024-38926 is a critical-severity vulnerability; its CVE record was published on December 6, 2024. Open Robotics Robotic Operating System 2 (ROS2) and Nav2 humble versions were discovered to contain a use-after-free via the nav2_amcl process. This vulnerability is triggered via remotely sending a request for change the value of dynamic-parameter /amcl z_short.
When was the CVE record for CVE-2024-38926 published?
The CVE record for CVE-2024-38926 was published on December 6, 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 December 17, 2024; the record at its source may have been updated since.
Is CVE-2024-38926 actively exploited?
CVE-2024-38926 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (48th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-38926?
CVE-2024-38926 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2024-38926?
A fix for CVE-2024-38926 is available: update to the fixed version the vendor names in its advisory.

Dependency Blast Radius

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