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Fencer Vulns
high 7.8

CVE-2016-9950 json

An issue was discovered in Apport before 2.20.4.

published 2016-12-17 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-10737

cvss
7.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.5%
EPSS 6.5% chance of exploitation in 30 days, percentile 93%
public exploits
1
Exploit-DB

Summary

An issue was discovered in Apport before 2.20.4. There is a path traversal issue in the Apport crash file "Package" and "SourcePackage" fields. These fields are used to build a path to the package specific hook files in the /usr/share/apport/package-hooks/ directory. An attacker can exploit this path traversal to execute arbitrary Python files from the local system.

Patch / fix

  • apport Ubuntu 14.04 LTS 2.14.1-0ubuntu3.23
  • apport Ubuntu 16.04 LTS 2.20.1-0ubuntu2.4

ubuntu advisories UBUNTU-CVE-2016-9950

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Timeline

  1. First public exploit (EDB-40937)
  2. Published

Exploit prediction

6.55% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-40937 Apport 2.x (Ubuntu Desktop 12.10 < 16.04) - Local Code Execution local, 2016-12-14
  • donncha.is https://donncha.is/2016/12/compromising-ubuntu-desktop/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD 2.0 9.3 AV:N/AC:M/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.