CVE-2020-14976Public exploit

Root-only file disclosure via parser error output

Published Jun 23, 2020 · Updated Aug 4, 2024

Arbitrary file disclosure in GNS3 ubridge 0.9.18 and earlier on macOS allows local users to read root-only files via the -f option. parse_config passes the selected path to iniparser_load, whose LINE_ERROR branch prints each unparsable input line to stderr while ubridge retains setuid-root privileges. Any local account able to execute the bundled setuid binary can disclose file contents otherwise restricted to root.

CVSS severity5.5
Medium
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Arbitrary file disclosure in GNS3 ubridge 0.9.18 and earlier on macOS allows local users to read root-only files via the -f option. parse_config passes the selected path to iniparser_load, whose LINE_ERROR branch prints each unparsable input line to stderr while ubridge retains setuid-root privileges. Any local account able to execute the bundled setuid binary can disclose file contents otherwise restricted to root.

The record

CVE
CVE-2020-14976
Published
Jun 23, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-269, T1005
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 23, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.9NIST NVDAV:L/AC:L/Au:N/C:C/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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