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Vulnerability details: VCID-gack-9xgr-eyd2
Vulnerability ID VCID-gack-9xgr-eyd2
Aliases CVE-2019-7309
Summary In the GNU C Library (aka glibc or libc6) through 2.29, the memcmp function for the x32 architecture can incorrectly return zero (indicating that the inputs are equal) because the RDX most significant bit is mishandled.
Status Published
Exploitability 0.5
Weighted Severity 5.0
Risk 2.5
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-393 Return of Wrong Status Code
System Score Found at
cvssv3 3.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-7309.json
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.0013 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
epss 0.00246 https://api.first.org/data/v1/epss?cve=CVE-2019-7309
cvssv2 2.1 https://nvd.nist.gov/vuln/detail/CVE-2019-7309
cvssv3 5.5 https://nvd.nist.gov/vuln/detail/CVE-2019-7309
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-7309.json
https://api.first.org/data/v1/epss?cve=CVE-2019-7309
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-7309
https://security.gentoo.org/glsa/202006-04
https://sourceware.org/bugzilla/show_bug.cgi?id=24155
https://sourceware.org/ml/libc-alpha/2019-02/msg00041.html
http://www.securityfocus.com/bid/106835
1672232 https://bugzilla.redhat.com/show_bug.cgi?id=1672232
cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:x86:*
CVE-2019-7309 https://nvd.nist.gov/vuln/detail/CVE-2019-7309
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-7309.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: AV:L/AC:L/Au:N/C:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-7309
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:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-7309
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 0.33311
EPSS Score 0.0013
Published At Aug. 4, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T10:01:04.346537+00:00 NVD Importer Import https://nvd.nist.gov/vuln/detail/CVE-2019-7309 37.0.0