How severe is CVE-2025-47868?

CVE-2025-47868 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2025-47868 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-47868?

CVE-2025-47868 affects Apache Nuttx. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-47868?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2025-47868 have an EU (EUVD) identifier?

Yes. CVE-2025-47868 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18391.

When was CVE-2025-47868 published?

CVE-2025-47868 was published on 2025-06-16 and last updated on 2026-06-17.

CVE-2025-47868

CVE-2025-47868 is a critical-severity vulnerability in Apache Nuttx with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-122.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-18391
Weakness: CWE-122
Affected product: Apache Nuttx
Published: 2025-06-16
Last modified: 2026-06-17

Description

Out-of-bounds Write resulting in possible Heap-based Buffer Overflow vulnerability was discovered in tools/bdf-converter font conversion utility that is part of Apache NuttX RTOS repository. This standalone program is optional and neither part of NuttX RTOS nor Applications runtime, but active bdf-converter users may be affected when this tool is exposed to external provided user data data (i.e. publicly available automation). This issue affects Apache NuttX: from 6.9 before 12.9.0. Users are recommended to upgrade to version 12.9.0, which fixes the issue.

Frequently asked questions

What is CVE-2025-47868?: Out-of-bounds Write resulting in possible Heap-based Buffer Overflow vulnerability was discovered in tools/bdf-converter font conversion utility that is part of Apache NuttX RTOS repository. This standalone program is optional and neither part of NuttX RTOS nor Applications runtime, but active bdf-converter users may be affected when this tool is exposed to external provided user data data (i.e. publicly available automation). This issue affects Apache NuttX: from 6.9 before 12.9.0. Users are recommended to upgrade to version 12.9.0, which fixes the issue.
How severe is CVE-2025-47868?: CVE-2025-47868 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2025-47868 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-47868?: CVE-2025-47868 affects Apache Nuttx. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-47868?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2025-47868 have an EU (EUVD) identifier?: Yes. CVE-2025-47868 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-18391.
When was CVE-2025-47868 published?: CVE-2025-47868 was published on 2025-06-16 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:apache:nuttx:*:*:*:*:*:*:*:*

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