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Vulnerabilities

Vulnerability · CVE-2025-53888

RIOT-OS, an operating system that supports Internet of Things devices, has an ineffective size check implemented with can lead to buffer overflow in versions up to and including 20

Published Jul 18, 2025 · catalog updated Jul 18, 2025 · RIOT-OS RIOT

Check this week

CVE-2025-53888 is not in CISA KEV. FIRST estimates a 86.00% chance of exploitation in the next 30 days. Check whether you run RIOT-OS RIOT.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
86.00%
Remediation
Advisory link
Affected products
vendor RIOT-OS RIOT ≤ 2025.04

RIOT-OS, an operating system that supports Internet of Things devices, has an ineffective size check implemented with can lead to buffer overflow in versions up to and including 2025.04. Assertions are usually compiled out in production builds. If assertions are the only defense against untrusted inputs, the software may be exposed to attacks that utilize the lack of proper input checks. In the function shown below, is checked using an assertion and is subsequently used as an argument in a call. When assertions are disabled, there would be no size check for . As a consequence, if an attacker w

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor RIOT-OS RIOT ≤ 2025.04≤ 2025.04

How to fix CVE-2025-53888

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-53888 is not in CISA KEV. FIRST estimates a 86.00% chance of exploitation in the next 30 days. Check whether you run RIOT-OS RIOT.

Which versions are affected?

Compare what you have installed with RIOT-OS RIOT ≤ 2025.04 ≤ 2025.04. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 86.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jul 18, 2025 · EUVD

    Detected

    RIOT-OS, an operating system that supports Internet of Things devices, has an ineffective size check implemented with can lead to buffer overflow in versions up to and including 2025.04. Assertions are usually compiled out in production builds. If assertions are the only defense against untrusted inputs, the software may be exposed to attacks that utilize the lack of proper input checks. In the fu

  2. Jul 18, 2025 · EUVD

    Updated

    RIOT-OS, an operating system that supports Internet of Things devices, has an ineffective size check implemented with can lead to buffer overflow in versions up to and including 2025.04. Assertions are usually compiled out in production builds. If assertions are the only defense against untrusted inputs, the software may be exposed to attacks that utilize the lack of proper input checks. In the fu

Sources

  • CVE.orgVulnerability recordCVE-2025-53888

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-21893

    RIOT-OS, an operating system that supports Internet of Things devices, has an ineffective size check implemented with can lead to buffer overflow in versions up to and including 2025.04. Assertions are usually compiled out in production builds. If assertions are the only defense

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Jul 18, 2025. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.