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Fencer Vulns
high 8.8

CVE-2020-9273 in the critical feed json

In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel.

published 2020-02-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-30102

cvss
8.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
11.8%
EPSS 11.8% chance of exploitation in 30 days, percentile 96%
public exploits
0
none known

Summary

In ProFTPD 1.3.7, it is possible to corrupt the memory pool by interrupting the data transfer channel. This triggers a use-after-free in alloc_pool in pool.c, and possible remote code execution.

Patch / fix

  • siemens simatic_net_cp_1543-1_firmware 3.0
  • proftpd-dfsg Debian 14, Debian 13, Debian 12 1.3.6c-2

debian advisories DEBIAN-CVE-2020-9273

  • proftpd openSUSE Tumbleweed 1.3.6e-1.10
  • proftpd Package Hub 15 SP1, Package Hub 15, openSUSE Leap 15.1 1.3.6c-bp151.4.9.1

opensuse advisories openSUSE-SU-2024:11196-1openSUSE-SU-2020:0273-1

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-2020-9273 updated cvss 8.8

proftpd: use-after-free in alloc_pool in pool.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

11.82% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 9.0 AV:N/AC:L/Au:S/C:C/I:C/A:C

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.