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Vulnerability details: VCID-vb2b-utc4-2qgf
Vulnerability ID VCID-vb2b-utc4-2qgf
Aliases CVE-2019-17543
Summary lz4: heap-based buffer overflow in LZ4_write32
Status Published
Exploitability 0.5
Weighted Severity 7.3
Risk 3.6
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-122 Heap-based Buffer Overflow
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3 8.1 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.json
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01442 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01482 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01482 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
epss 0.01482 https://api.first.org/data/v1/epss?cve=CVE-2019-17543
cvssv3 7.4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 6.8 https://nvd.nist.gov/vuln/detail/CVE-2019-17543
cvssv3.1 8.1 https://nvd.nist.gov/vuln/detail/CVE-2019-17543
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00069.html
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00070.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.json
https://api.first.org/data/v1/epss?cve=CVE-2019-17543
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=15941
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17543
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/lz4/lz4/compare/v1.9.1...v1.9.2
https://github.com/lz4/lz4/issues/801
https://github.com/lz4/lz4/pull/756
https://github.com/lz4/lz4/pull/760
https://lists.apache.org/thread.html/25015588b770d67470b7ba7ea49a305d6735dd7f00eabe7d50ec1e17%40%3Cissues.arrow.apache.org%3E
https://lists.apache.org/thread.html/543302d55e2d2da4311994e9b0debdc676bf3fd05e1a2be3407aa2d6%40%3Cissues.arrow.apache.org%3E
https://lists.apache.org/thread.html/793012683dc0fa6819b7c2560e6cf990811014c40c7d75412099c357%40%3Cissues.arrow.apache.org%3E
https://lists.apache.org/thread.html/9ff0606d16be2ab6a81619e1c9e23c3e251756638e36272c8c8b7fa3%40%3Cissues.arrow.apache.org%3E
https://lists.apache.org/thread.html/f0038c4fab2ee25aee849ebeff6b33b3aa89e07ccfb06b5c87b36316%40%3Cissues.arrow.apache.org%3E
https://lists.apache.org/thread.html/f506bc371d4a068d5d84d7361293568f61167d3a1c3e91f0def2d7d3%40%3Cdev.arrow.apache.org%3E
https://lists.apache.org/thread.html/r0fb226357e7988a241b06b93bab065bcea2eb38658b382e485960e26%40%3Cissues.kudu.apache.org%3E
https://lists.apache.org/thread.html/r4068ba81066792f2b4d208b39c4c4713c5d4c79bd8cb6c1904af5720%40%3Cissues.kudu.apache.org%3E
https://lists.apache.org/thread.html/r7bc72200f94298bc9a0e35637f388deb53467ca4b2e2ad1ff66d8960%40%3Cissues.kudu.apache.org%3E
https://security.netapp.com/advisory/ntap-20210723-0001/
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2020.html
1765316 https://bugzilla.redhat.com/show_bug.cgi?id=1765316
943680 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=943680
cpe:2.3:a:lz4_project:lz4:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:lz4_project:lz4:*:*:*:*:*:*:*:*
CVE-2019-17543 https://nvd.nist.gov/vuln/detail/CVE-2019-17543
RHSA-2025:11035 https://access.redhat.com/errata/RHSA-2025:11035
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.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:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H 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:N/AC:M/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2019-17543
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:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2019-17543
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 0.80675
EPSS Score 0.01442
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:18:13.104455+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-17543.json 38.0.0