What is the CVSS score of CVE-2025-67433?

CVE-2025-67433 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. EPSS exploitation probability: 0.0%.

How to fix or mitigate CVE-2025-67433?

Within 24 hours: inventory all systems running Open TFTP Server v1.7 and assess their criticality and network exposure. Within 7 days: implement network segmentation to restrict TFTP access to only authorized users/systems, enable protocol-level monitoring, and establish incident response procedures. Within 30 days: evaluate alternative TFTP solutions, plan migration strategy, or contact vendor for patch status and timeline.

CVE-2025-67433

HIGH

Heap-based Buffer Overflow (CWE-122)

2026-02-12 cve@mitre.org

Buffer Overflow Denial Of Service

7.5

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

CVE Published

Feb 12, 2026 - 20:16 nvd

HIGH 7.5

DescriptionCVE.org

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.

AnalysisAI

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. [CVSS 7.5 HIGH]

Technical ContextAI

Classified as CWE-122 (Heap-based Buffer Overflow). 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.

Affected ProductsAI

Component: processRequest.

RemediationAI

Monitor vendor advisories for a patch. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.