CVE-2024-42002

HIGHPre-NVD 8.48.4
EchelonGraph scoreMEDIUM confidence

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

This high-severity CVE scores 8.4 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2% (5th percentile of EPSS-scored CVEs). No GitHub Security Advisory CVSS is on record for this CVE.

Triggered by: Headline CVSS from a secondary CVSS source
Sources: EPSS, a secondary CVSS source

Also known asEUVD-2024-55773 (ENISA EUVD)Source: ENISA EUVD

8.4EG
EchelonGraph verdictPlan mitigationThe upstream fix is not in a release yet: until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 8.4Exploit: None knownExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

A code injection vulnerability has been discovered in the Robot Operating System 2 (ROS 2) 'ros2topic' command-line tool, affecting all ROS 2 distributions from Crystal Clemmys up to and including Lyrical Luth and Rolling Ridley. The vulnerability lies in the 'hz' verb, which reports the publishing rate of a topic and accepts a user-provided Python expression via the --filter option. This input is passed directly to the eval() function without sanitization, allowing a local user to craft and execute arbitrary code.

CVSS v3
8.4
EG Score
8.4HIGHmedium confidence
EG Risk
38
EG Risk 38/100

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)
Severity84% × 45%
Impact severity (EG Severity): CVSS 8.4 of 10. Never the KEV-floored or EPSS-lifted EG Score.
Exploitation0.2% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (CISA Vulnrichment) · Automatable no (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: An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it.
EPSS PROB
0.2%
EPSS %ILE
5th
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 (8.4): severity, escalated by confirmed exploitation. This CVE's 8.4 is its impact severity (EG Severity), not escalated.

EG Severity
8.4 HIGHCVSS-B, impact only: no KEV listing, EPSS or EG-KEV tier raises it.a secondary CVSS source · CVSS v3.0 or v3.1
EG Likelihood
0.2% within 30 daysSource: FIRST EPSS (model v2026.06.15, score date 2026-10-27). 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; Track* at high (mission-essential systems).CISA BOD 26-04: 14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.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; Track* at high (mission-essential systems).

An upstream fix is merged but not yet in a tagged release. Until the release ships, restrict network exposure of the affected system or apply the vendor's mitigation on your normal schedule, then apply it.

Exploitation none (CISA Vulnrichment) · Automatable no (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)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

No released fix is confirmed on this page, but CISA's timeline does not wait for a fix's release: it starts when an agency identifies the flaw on an asset and updates the CDM Agency and Federal Dashboard, and the directive counts patching, decommissioning the system or another action as remediation. Until a fixed release is applied, mitigate as this page's verdict says. In the directive's words, “Fix on system upgrade” means that, “unless conditions change”, the vulnerability “should be remediated the next time the vulnerable asset receives a scheduled major upgrade or rebuild”: its timelines are “dynamic as facts change”, and a KEV listing shortens them.

The score's inputs: In CISA KEV no (CISA's KEV catalog) · Automatable no (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

September 28, 2026

Last Modified

September 30, 2026

Advisory Details (2)

Auto-updated Sep 28, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
GitHub pull request

Enable ros2tpoic hz command

Fix merged in ros2/ros2cli PR #133 on 2018-10-26 — awaiting tagged release

https://github.com/ros2/ros2cli/pull/133#discussion_r223081766
GitHub pull request

Patch CVE-2024-42002

Upstream fix in progress (PR #1001 · ros2/ros2cli, state=open)

https://github.com/ros2/ros2cli/pull/1001

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 8× in last 7d / 44× 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.

  1. 2026-11-02 16:41 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  2. 2026-11-01 16:31 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  3. 2026-10-31 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  4. 2026-10-30 16:32 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  5. 2026-10-29 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  6. 2026-10-28 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  7. 2026-10-27 20:14 UTCEG score recompute
  8. 2026-10-27 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  9. 2026-10-26 16:29 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  10. 2026-10-25 17:04 UTCEG score recompute
  11. 2026-10-25 16:30 UTCEPSS rescoreEPSS 0.2% · 5th percentile
  12. 2026-10-24 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  13. 2026-10-23 16:29 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-22 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  15. 2026-10-21 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  16. 2026-10-20 19:29 UTCEG score recompute
  17. 2026-10-20 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  18. 2026-10-19 16:29 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  19. 2026-10-18 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  20. 2026-10-18 07:05 UTCEG score recompute
  21. 2026-10-17 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  22. 2026-10-16 16:36 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-10-15 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  24. 2026-10-14 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  25. 2026-10-13 16:30 UTCEPSS rescoreEPSS 0.2% · 4th percentile
Show 31 more
  1. 2026-10-12 17:48 UTCEG score recompute
  2. 2026-10-12 16:31 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  3. 2026-10-11 21:13 UTCEG score recompute
  4. 2026-10-11 14:45 UTCEG score recompute
  5. 2026-10-11 13:46 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  6. 2026-10-11 03:18 UTCEG score recompute
  7. 2026-10-10 19:58 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  8. 2026-10-10 04:18 UTCEG score recompute
  9. 2026-10-09 20:05 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  10. 2026-10-08 17:53 UTCEG score recompute
  11. 2026-10-08 17:08 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  12. 2026-10-08 06:26 UTCEG score recompute
  13. 2026-10-07 23:46 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  14. 2026-10-06 20:01 UTCEG score recompute
  15. 2026-10-06 15:15 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  16. 2026-10-05 21:02 UTCEG score recompute
  17. 2026-10-05 17:41 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  18. 2026-10-05 09:34 UTCEG score recompute
  19. 2026-10-04 23:20 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  20. 2026-10-02 23:56 UTCEG score recompute
  21. 2026-10-02 00:57 UTCEG score recompute
  22. 2026-10-01 19:48 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  23. 2026-10-01 02:01 UTCEG score recompute
  24. 2026-09-30 15:01 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  25. 2026-09-30 14:31 UTCEG score recompute
  26. 2026-09-30 13:53 UTCEG score recompute
  27. 2026-09-29 19:07 UTCEG score recompute
  28. 2026-09-29 15:17 UTCEPSS rescoreEPSS 0.2% · 4th percentile
  29. 2026-09-28 22:29 UTCEG score recompute
  30. 2026-09-28 21:42 UTCEG score recomputeFirst assessed: 8.4 HIGH
  31. 2026-09-28 21:41 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2024-42002?
CVE-2024-42002 is a high-severity vulnerability; its CVE record was published on September 28, 2026. A code injection vulnerability has been discovered in the Robot Operating System 2 (ROS 2) 'ros2topic' command-line tool, affecting all ROS 2 distributions from Crystal Clemmys up to and including Lyrical Luth and Rolling Ridley. The vulnerability lies in the 'hz' verb, which reports the publishing…
When was the CVE record for CVE-2024-42002 published?
The CVE record for CVE-2024-42002 was published on September 28, 2026. 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 September 30, 2026; the record at its source may have been updated since.
Is CVE-2024-42002 actively exploited?
CVE-2024-42002 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2024-42002?
CVE-2024-42002 has a CVSS base score of 8.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2024-42002?
An upstream fix for CVE-2024-42002 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2024-42002

Explore →

Is Your Infrastructure Affected by CVE-2024-42002?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.