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Vulnerability record · CVE-2016-7543 · published 19 January 2017

CVE-2016-7543: Gnu bash improper input validation vulnerability

Gnu · Bash

Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.

8.4 CVSS 3.0 High EPSS 0.58% · top 54.7% CWE-20 · Improper input validation
8.4CVSS 3.0 base score, v2 7.2
0.58%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
22References
17 Jun 2026Last modified by NVD

Description

Bash before 4.4 allows local users to execute arbitrary commands with root privileges via crafted SHELLOPTS and PS4 environment variables.

CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://rhn.redhat.com/errata/RHSA-2017-0725.html
http://www.openwall.com/lists/oss-security/2016/09/26/9 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93183 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037812
https://access.redhat.com/errata/RHSA-2017:1931
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUI
https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html PatchVendor Advisory
https://security.gentoo.org/glsa/201701-02 Third Party Advisory
http://rhn.redhat.com/errata/RHSA-2017-0725.html
http://www.openwall.com/lists/oss-security/2016/09/26/9 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/93183 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1037812
https://access.redhat.com/errata/RHSA-2017:1931
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05388115
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/F7XOQSHU63Y357NHU5FPTFB
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OU3C756YPHDAAPFX76UGZBA
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z2VRBSIPZDZ75ZQ2DLITHUI
https://lists.gnu.org/archive/html/bug-bash/2016-09/msg00018.html PatchVendor Advisory
https://security.gentoo.org/glsa/201701-02 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-7543), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.