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Vulnerability details: VCID-w91q-2f69-7fe9
Vulnerability ID VCID-w91q-2f69-7fe9
Aliases CVE-2018-7225
Summary An issue was discovered in LibVNCServer through 0.9.11. rfbProcessClientNormalMessage() in rfbserver.c does not sanitize msg.cct.length, leading to access to uninitialized and potentially sensitive data or possibly unspecified other impact (e.g., an integer overflow) via specially crafted VNC packets.
Status Published
Exploitability 0.5
Weighted Severity 8.8
Risk 4.4
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-805 Buffer Access with Incorrect Length Value
CWE-190 Integer Overflow or Wraparound
System Score Found at
cvssv3 5.4 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7225.json
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.03567 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
epss 0.0375 https://api.first.org/data/v1/epss?cve=CVE-2018-7225
cvssv3 7.1 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-7225
cvssv3 9.8 https://nvd.nist.gov/vuln/detail/CVE-2018-7225
archlinux High https://security.archlinux.org/AVG-628
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7225.json
https://api.first.org/data/v1/epss?cve=CVE-2018-7225
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7225
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://github.com/LibVNC/libvncserver/issues/218
https://lists.debian.org/debian-lts-announce/2018/03/msg00035.html
https://lists.debian.org/debian-lts-announce/2019/10/msg00042.html
https://lists.debian.org/debian-lts-announce/2019/11/msg00032.html
https://lists.debian.org/debian-lts-announce/2019/12/msg00028.html
https://security.gentoo.org/glsa/201908-05
https://www.debian.org/security/2018/dsa-4221
http://www.openwall.com/lists/oss-security/2018/02/18/1
http://www.securityfocus.com/bid/103107
1546858 https://bugzilla.redhat.com/show_bug.cgi?id=1546858
894045 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=894045
AVG-628 https://security.archlinux.org/AVG-628
cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libvncserver_project:libvncserver:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
CVE-2018-7225 https://nvd.nist.gov/vuln/detail/CVE-2018-7225
RHSA-2018:1055 https://access.redhat.com/errata/RHSA-2018:1055
USN-3618-1 https://usn.ubuntu.com/3618-1/
USN-4547-1 https://usn.ubuntu.com/4547-1/
USN-4573-1 https://usn.ubuntu.com/4573-1/
USN-4587-1 https://usn.ubuntu.com/4587-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-7225.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:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/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:L/Au:N/C:P/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7225
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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-7225
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 0.87262
EPSS Score 0.03567
Published At Sept. 9, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:28:17.505265+00:00 Alpine Linux Importer Import https://secdb.alpinelinux.org/v3.19/community.json 37.0.0