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Vulnerability details: VCID-2rn1-y4d5-67dd
Vulnerability ID VCID-2rn1-y4d5-67dd
Aliases CVE-2019-19126
Summary On the x86-64 architecture, the GNU C Library (aka glibc) before 2.31 fails to ignore the LD_PREFER_MAP_32BIT_EXEC environment variable during program execution after a security transition, allowing local attackers to restrict the possible mapping addresses for loaded libraries and thus bypass ASLR for a setuid program.
Status Published
Exploitability 0.5
Weighted Severity 3.0
Risk 1.5
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-665 Improper Initialization
System Score Found at
cvssv3 2.9 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-19126.json
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00016 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
epss 0.00023 https://api.first.org/data/v1/epss?cve=CVE-2019-19126
cvssv3.1 2.9 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 2.1 https://nvd.nist.gov/vuln/detail/CVE-2019-19126
cvssv3.1 3.3 https://nvd.nist.gov/vuln/detail/CVE-2019-19126
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-19126.json
https://api.first.org/data/v1/epss?cve=CVE-2019-19126
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-19126
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4FQ5LC6JOYSOYFPRUZ4S45KL6IP3RPPZ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZFJ5E7NWOL6ROE5QVICHKIOUGCPFJVUH/
https://sourceware.org/bugzilla/show_bug.cgi?id=25204
1774681 https://bugzilla.redhat.com/show_bug.cgi?id=1774681
945250 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=945250
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x64:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x64:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:*
CVE-2019-19126 https://nvd.nist.gov/vuln/detail/CVE-2019-19126
RHSA-2020:1828 https://access.redhat.com/errata/RHSA-2020:1828
RHSA-2020:3861 https://access.redhat.com/errata/RHSA-2020:3861
RHSA-2021:0949 https://access.redhat.com/errata/RHSA-2021:0949
USN-4416-1 https://usn.ubuntu.com/4416-1/
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-19126.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: AV:L/AC:L/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-19126
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2019-19126
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.02054
EPSS Score 0.00016
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:34:31.787659+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4416-1/ 37.0.0