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Fencer Vulns
high 7.5

CVE-2020-14929 json

Alpine before 2.23 silently proceeds to use an insecure connection after a /tls is sent in certain circumstances involving PREAUTH, which i…

published 2020-06-19 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-7065

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.9%
EPSS 1.9% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

Alpine before 2.23 silently proceeds to use an insecure connection after a /tls is sent in certain circumstances involving PREAUTH, which is a less secure behavior than the alternative of closing the connection and letting the user decide what they would like to do.

Patch / fix

  • alpine_project alpine 2.23
  • alpine Debian 14, Debian 13, Debian 12 2.23+dfsg1-1

debian advisories DEBIAN-CVE-2020-14929

  • alpine Ubuntu Pro 16.04 LTS 2.20+dfsg1-2ubuntu0.1~esm1
  • alpine Ubuntu Pro 18.04 LTS 2.21+dfsg1-1ubuntu0.1~esm1
  • alpine Ubuntu Pro 20.04 LTS 2.22+dfsg1-1ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2020-14929

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

  • alpine Package Hub 15 SP2 2.24-bp152.4.3.1
  • alpine openSUSE Leap 15.2 2.24-lp152.5.3.1

opensuse advisories openSUSE-SU-2021:0695-1openSUSE-SU-2021:0675-1

  • alpine Alpine 3.24, Alpine 3.23, Alpine 3.22 +10 more 2.23-r0

alpine advisories ALPINE-CVE-2020-14929

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-2020-14929 updated cvss 5.9

alpine: silently proceeds to use an insecure connection after a /tls is sent in certain circumstances involving PREAUTH

  • 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

1.87% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

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

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.