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Fencer Intel
medium 6.8

CVE-2016-4484 json

The Debian initrd script for the cryptsetup package 2:1.7.3-2 and earlier allows physically proximate attackers to gain shell access via ma…

published 2017-01-23 9 y ago modified 2026-06-17 4 mo ago also EUVD-2016-5471

cvss
6.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.7%
EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits
0
none known

Summary

The Debian initrd script for the cryptsetup package 2:1.7.3-2 and earlier allows physically proximate attackers to gain shell access via many log in attempts with an invalid password.

Patch / fix

  • cryptsetup Debian 14, Debian 13, Debian 12 2:1.7.3-2

debian advisories DEBIAN-CVE-2016-4484

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-2016-4484 updated cvss 6.8

dracut: Brute force attack on LUKS password decryption via initramfs

  • Red Hat Enterprise Linux 6 dracut, dracut-caps, dracut-fips, dracut-tools, dracut-kernel, dracut-generic, +2 more Red Hat Enterprise Linux 7 dracut, dracut-caps, dracut-fips, dracut-tools, dracut-network, dracut-fips-aesni, +2 more
    affected: workaround, no fix planned “Will not fix”

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

0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • hmarco.org http://hmarco.org/bugs/CVE-2016-4484/CVE-2016-4484_cryptsetup_initrd_shell.html referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.8 CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness

References

Sources

Fencer Intel 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.