CVE-2020-14976

Name: CVE-2020-14976
Creator: NVD / NIST
Published: 2020-06-23T20:15:12.927+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.5/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2020-14976 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

GNS3 ubridge through 0.9.18 on macOS, as used in GNS3 server before 2.1.17, allows a local attacker to read arbitrary files because it handles configuration-file errors by printing the configuration file while executing in a setuid root context.

Metrics

CVSS 3.1

5.5/10

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

EPSS Probability

0.48%

37.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-269

Affected Software

Vendor	Product	Versions
Gns3	Ubridge	<= 0.9.18

References

https://github.com/GNS3/gns3-server/releases/tag/v2.1.17Release Notes, Third Party Advisory
https://github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077dbPatch, Third Party Advisory
https://theevilbit.github.io/posts/Exploit, Third Party Advisory
https://www.gns3.com/Vendor Advisory
https://github.com/GNS3/gns3-server/releases/tag/v2.1.17Release Notes, Third Party Advisory
https://github.com/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077dbPatch, Third Party Advisory
https://theevilbit.github.io/posts/Exploit, Third Party Advisory
https://www.gns3.com/Vendor Advisory

Timeline

Published: Jun 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14976?

How severe is CVE-2020-14976?

CVE-2020-14976 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14976?

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-2020-14976?

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

Scan your code now

Source: NVD / NIST