CVE-2019-16255

mediumpriority · track · 33EPSS 0.042 · 91 %ileDEEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

4.19% (91st) EPSS

CVSS 6.8 · medium

Is it mine?

50 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · scored 2026-10-27

Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 allows code injection if the first argument (aka the "command" argument) to Shell#[] or Shell#test in lib/shell.rb is untrusted data. An attacker can exploit this to call an arbitrary Ruby method.

cvss

Technical severity, 0–10. One row per scoring source.

9.8

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.8–9.8

v2.06.8mediumAV:N/AC:M/Au:N/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8.6 · impact 6.4

v3.18.1highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.2 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.17.4highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USprimaryCWE-74US

affected products (50)

Products and version ranges known to be affected.

Amazon Linux 2all versionscert_bundDEcpe:/o:amazon:linux_2:-
Debian Linuxall versionscert_bundDEcpe:/o:debian:debian_linux:-
Open Source Arch Linuxall versionscert_bundDEcpe:/o:archlinux:archlinux:-
Open Source Ruby 2.4.8all versionscert_bundDEcpe:/a:ruby-lang:ruby:2.4.8
Open Source Ruby 2.5.7all versionscert_bundDEcpe:/a:ruby-lang:ruby:2.5.7
Open Source Ruby 2.6.5all versionscert_bundDEcpe:/a:ruby-lang:ruby:2.6.5
Oracle Linuxall versionscert_bundDEcpe:/o:oracle:linux:-
Red Hat Enterprise Linuxall versionscert_bundDEcpe:/o:redhat:enterprise_linux:-
SUSE Linuxall versionscert_bundDEcpe:/o:suse:suse_linux:-
Ubuntu Linuxall versionscert_bundDEcpe:/o:canonical:ubuntu_linux:-
n/a n/a≤ n/aenisa_euvdEU
IBM Corp. IBM Cloud Foundry Migration Runtime≤ 4.1.1fstec_bduRU
Novell Inc. OpenSUSE Leap≤ 15.1fstec_bduRU
Novell Inc. SUSE CaaS Platform≤ 2.0fstec_bduRU
Novell Inc. SUSE CaaS Platform≤ 1.0fstec_bduRU
Novell Inc. SUSE CaaS Platform≤ 3.0fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Server for SAP Applications 12 SP4fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Server for SAP Applications 12 SP3fstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Server 12 SP3 LTSSfstec_bduRU
Novell Inc. SUSE Linux Enterprise≤ Server 12 SP2 LTSSfstec_bduRU

showing 20 of 50

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2023-1110Ruby: Mehrere SchwachstellenDeutsch2019-10-01csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Ruby ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um Daten zu manipulieren oder einen Denial of Servie zu verursachen.

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu cert_bund NVD CVE.org MITRE

published 2019-11-26modified 2026-06-17

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+10438 more

references (79)

External citations — patches, advisories, analysis.

scry

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