CVE-2020-29138

Name: CVE-2020-29138
Creator: NVD / NIST
Published: 2020-11-27T16:15:11.507+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 1.12%

Last modified Jun 17, 2026

CVE-2020-29138 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Incorrect Access Control in the configuration backup path in SAGEMCOM F@ST3486 NET DOCSIS 3.0, software NET_4.109.0, allows remote unauthenticated users to download the router configuration file via the /backupsettings.conf URI, when any valid session is running.. EPSS estimates a 1.12% chance of exploitation in the next 30 days.

Description

Incorrect Access Control in the configuration backup path in SAGEMCOM F@ST3486 NET DOCSIS 3.0, software NET_4.109.0, allows remote unauthenticated users to download the router configuration file via the /backupsettings.conf URI, when any valid session is running.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

1.12%

61.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
Sagemcom	F\@St 3486 Router Firmware	4.109.0

References

Timeline

Published: Nov 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-29138?

How severe is CVE-2020-29138?

CVE-2020-29138 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 1.12% probability of exploitation in the next 30 days.

How do I fix CVE-2020-29138?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-29138?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST