What is the CVSS score of CVE-2025-29329?

CVE-2025-29329 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 1.7%.

Which versions of F St 3686 Firmware are affected by CVE-2025-29329?

CVE-2025-29329 presents critical security risk, a buffer overflow vulnerability rated CVSS 9.8.

Is there a public PoC exploit available for CVE-2025-29329?

Yes, a public proof-of-concept exploit is available for CVE-2025-29329. Prioritise patching immediately. EPSS: 1.7%.

How to fix or mitigate CVE-2025-29329?

Within 24 hours: Identify all affected systems and apply vendor patches immediately. If patching is delayed, consider network segmentation to limit exposure.

F St 3686 Firmware CVE-2025-29329

CRITICAL

Classic Buffer Overflow (CWE-120)

2026-01-12 cve@mitre.org

Buffer Overflow F St 3686 Firmware

9.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

9.8 CRITICAL

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Jan 22, 2026 - 18:46 vuln.today

Public exploit code

CVE Published

Jan 12, 2026 - 22:16 nvd

CRITICAL 9.8

DescriptionCVE.org

Buffer Overflow in the ippprint (Internet Printing Protocol) service in Sagemcom F@st 3686 MAGYAR_4.121.0 allows remote attacker to execute arbitrary code by sending a crafted HTTP request.

AnalysisAI

Sagemcom F@st 3686 cable modem/router has a buffer overflow in the IPP printing service that allows unauthenticated remote code execution via crafted HTTP requests. PoC available.

Technical ContextAI

The ippprint service processes HTTP requests without proper bounds checking (CWE-120). A crafted request overflows a buffer, enabling code execution on the cable modem.

RemediationAI

Contact your ISP for firmware updates. If possible, use your own router behind the cable modem.

CVE-2025-29329 vulnerability details – vuln.today

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F St 3686 Firmware CVE-2025-29329

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code