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Vulnerability details: VCID-9gdb-hqgj-jfcm
Vulnerability ID VCID-9gdb-hqgj-jfcm
Aliases CVE-2019-15690
Summary LibVNCServer 0.9.12 release and earlier contains heap buffer overflow vulnerability within the HandleCursorShape() function in libvncclient/cursor.c. An attacker sends cursor shapes with specially crafted dimensions, which can result in remote code execution.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-122 Heap-based Buffer Overflow
CWE-190 Integer Overflow or Wraparound
System Score Found at
cvssv3 9.8 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15690.json
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01341 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
epss 0.01501 https://api.first.org/data/v1/epss?cve=CVE-2019-15690
cvssv3.1 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv3.1 8.8 https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/
ssvc Track https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15690.json
https://api.first.org/data/v1/epss?cve=CVE-2019-15690
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15690
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1811948 https://bugzilla.redhat.com/show_bug.cgi?id=1811948
954163 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954163
CVE-2019-15690 https://nvd.nist.gov/vuln/detail/CVE-2019-15690
klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12 https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/
RHSA-2020:0913 https://access.redhat.com/errata/RHSA-2020:0913
RHSA-2020:0920 https://access.redhat.com/errata/RHSA-2020:0920
RHSA-2020:0921 https://access.redhat.com/errata/RHSA-2020:0921
USN-4407-1 https://usn.ubuntu.com/4407-1/
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2019-15690.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:N/AC:H/PR:N/UI:R/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: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/
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: SSVCv2/E:N/A:N/T:T/P:M/B:A/M:M/D:T/2025-01-24T18:22:46Z/ Found at https://ics-cert.kaspersky.com/vulnerabilities/klcert-20-009-remote-code-execution-on-libvnc-version-prior-to-0-9-12/
Exploit Prediction Scoring System (EPSS)
Percentile 0.79186
EPSS Score 0.01341
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:42:19.848713+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/4407-1/ 37.0.0