CVE-2024-24335

Memory corruption via unchecked ROMFS name copy

Published Mar 27, 2024 · Updated Nov 4, 2025

Heap buffer overflow in RT-Thread 5.0.2 and earlier allows local users to corrupt memory by listing a crafted dfs_v2 ROMFS directory. dfs_romfs_getdents passes rt_strlen(name) + 1 to rt_strncpy without limiting the copy to d_name, so an overlong entry name overwrites heap memory. Triggering requires DFS v2 with ROMFS enabled and an overlong directory entry; the published analysis does not establish a reliable post-corruption outcome.

CVSS severity8.4
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Heap buffer overflow in RT-Thread 5.0.2 and earlier allows local users to corrupt memory by listing a crafted dfs_v2 ROMFS directory. dfs_romfs_getdents passes rt_strlen(name) + 1 to rt_strncpy without limiting the copy to d_name, so an overlong entry name overwrites heap memory. Triggering requires DFS v2 with ROMFS enabled and an overlong directory entry; the published analysis does not establish a reliable post-corruption outcome.

The record

CVE
CVE-2024-24335
Published
Mar 27, 2024
Updated
Nov 4, 2025
Vendor
RT-Thread
Product
RT-Thread
Classifications
CWE-122
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 27, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 4, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=5.0.2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

RT-Thread · RT-Threadversion=0 <=5.0.2

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/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.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-122Heap-based Buffer Overflow

Public exploit references

No public exploit references are available in this record.

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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