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Fencer Vulns
medium 6.5

CVE-2019-16165 json

GNU cflow through 1.6 has a use-after-free in the reference function in parser.c.

published 2019-09-09 7 y ago modified 2026-06-17 4 mo ago also EUVD-2019-6985

cvss
6.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.1%
EPSS 1.1% chance of exploitation in 30 days, percentile 67%
public exploits
0
none known

Summary

GNU cflow through 1.6 has a use-after-free in the reference function in parser.c.

Patch / fix

  • cflow Debian 14, Debian 13, Debian 12 1:1.6-6

debian advisories DEBIAN-CVE-2019-16165

  • cflow Ubuntu Pro 16.04 LTS 1:1.4+dfsg1-3ubuntu1.16.04.1~esm1
  • cflow Ubuntu Pro 18.04 LTS 1:1.4+dfsg1-3ubuntu1.18.04.1~esm1

ubuntu advisories UBUNTU-CVE-2019-16165

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

  • cflow openSUSE Tumbleweed 1.7-1.1

opensuse advisories openSUSE-SU-2024:11709-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-16165 updated cvss 4.8

cflow: use-after-free in the reference function in parser.c

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.15% chance of exploitation in the next 30 days, higher than 67% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

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.