CVE-2024-38926Public exploitNetwork attack vector

Remote process crash via stale scan filter

Published Dec 6, 2024 · Updated Dec 11, 2024

Use-after-free in Nav2 AMCL on ROS 2 Humble allows remote attackers to crash localization by changing a dynamic parameter. The dynamic-parameter callback reinitializes message filters after freeing the laser-scan subscriber, while the old filter still dereferences that subscriber. Access to the ROS 2 DDS graph is sufficient; the resulting heap error stops nav2_amcl and interrupts localization.

CVSS severity9.1
Critical
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Nav2 AMCL on ROS 2 Humble allows remote attackers to crash localization by changing a dynamic parameter. The dynamic-parameter callback reinitializes message filters after freeing the laser-scan subscriber, while the old filter still dereferences that subscriber. Access to the ROS 2 DDS graph is sufficient; the resulting heap error stops nav2_amcl and interrupts localization.

The record

CVE
CVE-2024-38926
Published
Dec 6, 2024
Updated
Dec 11, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-416, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 11, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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