CVE-2020-14976 json
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 hand…
published 2020-06-23 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7106
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- theevilbit.github.io https://theevilbit.github.io/posts/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 4.9 | AV:L/AC:L/Au:N/C:C/I:N/A:N |
Classification
- Weakness
-
- CWE-269 Improper Privilege Management
References
-
github.com
/GNS3/ubridge/commit/2eb0d1dab6a6de76cf3556130a2d52af101077db
patch, third-party-advisory
-
theevilbit.github.io
/posts/
exploit, third-party-advisory
-
gns3.com
/
vendor-advisory
-
github.com
/GNS3/gns3-server/releases/tag/v2.1.17
release-notes, third-party-advisory
Sources
- CVE List CVE-2020-14976
- NVD CVE-2020-14976
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