How severe is CVE-2025-29329?

CVE-2025-29329 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-2025-29329 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-29329?

CVE-2025-29329 affects Sagemcom F@st 3686 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-29329?

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-2025-29329 have an EU (EUVD) identifier?

Yes. CVE-2025-29329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206276.

When was CVE-2025-29329 published?

CVE-2025-29329 was published on 2026-01-12 and last updated on 2026-07-05.

CVE-2025-29329

CVE-2025-29329 is a critical-severity vulnerability in Sagemcom F@st 3686 Firmware 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-120.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-206276
Weakness: CWE-120
Affected product: Sagemcom F@st 3686 Firmware
Published: 2026-01-12
Last modified: 2026-07-05

Description

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.

Frequently asked questions

What is CVE-2025-29329?: 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.
How severe is CVE-2025-29329?: CVE-2025-29329 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-2025-29329 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-29329?: CVE-2025-29329 affects Sagemcom F@st 3686 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-29329?: 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-2025-29329 have an EU (EUVD) identifier?: Yes. CVE-2025-29329 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-206276.
When was CVE-2025-29329 published?: CVE-2025-29329 was published on 2026-01-12 and last updated on 2026-07-05.

References

https://github.com/SilverS3c/Sagemcom-fast-3686-ippprint

EU advisories (EUVD)

Affected products (1)

cpe:2.3:o:sagemcom:f\@st_3686_firmware:4.121.0:*:*:*:*:*:*:*

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