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TI-2025-21043 Aliases CVE-2025-29329GHSA-whj7-f2cg-8pv5

Buffer Overflow in the ippprint (Internet Printing Protocol) service in Sagemcom F@st…

Priority MEDIUM 51CWE-120Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-120 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00976 62nd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:sagemcom:f\@st_3686_firmware:4.121.0:*:*:*:*:*:*:*4.121.0VulnerableSagemcom
cpe:2.3:h:sagemcom:f\@st_3686:-:*:*:*:*:*:*:*not specified by NVDRunning onSagemcom
  • cpe:2.3:o:sagemcom:f\@st_3686_firmware:4.121.0:*:*:*:*:*:*:* Versions 4.121.0 Vulnerable ·Sagemcom
  • cpe:2.3:h:sagemcom:f\@st_3686:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Sagemcom

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-29329
  2. 2026-10-03 Alias added: GHSA-whj7-f2cg-8pv5

References

Exploit 1

  • TI-2019-14043 Broadcom based cable modems across multiple vendors are vulnerable to a buffer overflow… CVSS 3.1HIGH 8.8
  • TI-2021-02310 Sagemcom F@ST 3686 v2 3.495 devices have a buffer overflow via a long sessionKey to the goform/login URI. CVSS 3.1CRITICAL 9.8
  • TI-2024-01507 Insufficient session timeout vulnerability in Sagemcom router CVSS 3.1HIGH 7.8
  • TI-2020-14160 Sagemcom F@ST3686 v1.0 HUN 3.97.0 has XSS via RgDiagnostics.asp, RgDdns.asp, RgFirewallEL.asp, RgVpnL2tpPptp.asp. CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences