How severe is CVE-2025-67433?

CVE-2025-67433 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2025-67433 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-67433?

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

Does CVE-2025-67433 have an EU (EUVD) identifier?

Yes. CVE-2025-67433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207242.

When was CVE-2025-67433 published?

CVE-2025-67433 was published on 2026-02-12 and last updated on 2026-06-17.

CVE-2025-67433

CVE-2025-67433 is a high-severity vulnerability with a CVSS 3.x base score of 7.5. 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: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (31st percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-207242
Weakness: CWE-122
Published: 2026-02-12
Last modified: 2026-06-17

Description

A heap buffer overflow in the processRequest function of Open TFTP Server MultiThreaded v1.7 allows attackers to cause a Denial of Service (DoS) via a crafted DATA packet.

Frequently asked questions

What is CVE-2025-67433?: A heap buffer overflow in the processRequest function of Open TFTP Server MultiThreaded v1.7 allows attackers to cause a Denial of Service (DoS) via a crafted DATA packet.
How severe is CVE-2025-67433?: CVE-2025-67433 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2025-67433 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (31st percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-67433?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-67433 have an EU (EUVD) identifier?: Yes. CVE-2025-67433 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-207242.
When was CVE-2025-67433 published?: CVE-2025-67433 was published on 2026-02-12 and last updated on 2026-06-17.

References

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