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Fencer Vulns
high 7.5

CVE-2020-9274 json

An issue was discovered in Pure-FTPd 1.0.49.

published 2020-02-26 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30103

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
6.0%
EPSS 6.0% chance of exploitation in 30 days, percentile 93%
public exploits
0
none known, plus a Nuclei check

Summary

An issue was discovered in Pure-FTPd 1.0.49. An uninitialized pointer vulnerability has been detected in the diraliases linked list. When the *lookup_alias(const char alias) or print_aliases(void) function is called, they fail to correctly detect the end of the linked list and try to access a non-existent list member. This is related to init_aliases in diraliases.c.

Patch / fix

  • pureftpd pure-ftpd 1.0.50
  • pure-ftpd Debian 13, Debian 12 1.0.49-4

debian advisories DEBIAN-CVE-2020-9274

  • pure-ftpd Ubuntu 16.04 LTS 1.0.36-3.2+deb8u1build0.16.04.1

ubuntu advisories UBUNTU-CVE-2020-9274

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

  • pure-ftpd openSUSE Tumbleweed 1.0.50-1.1

opensuse advisories openSUSE-SU-2024:11773-1

  • pure-ftpd Alpine 3.24, Alpine 3.23, Alpine 3.22 +6 more 1.0.49-r1

alpine advisories ALPINE-CVE-2020-9274

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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-2020-9274 updated cvss 7.5

pure-ftpd: uninitialized pointer in the diraliases linked list leads to denial of service or information disclosure

  • 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

6.01% chance of exploitation in the next 30 days, higher than 93% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Pure-FTPd ≤ 1.0.49 - DoS via Uninitialized Pointer nuclei detection template

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-824 Access of Uninitialized Pointer

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.