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Vulnerability details: VCID-q4pf-fuwv-d3e3
Vulnerability ID VCID-q4pf-fuwv-d3e3
Aliases CVE-2018-12178
Summary edk2: improper DNS packet size check
Status Published
Exploitability 0.5
Weighted Severity 8.2
Risk 4.1
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-125 Out-of-bounds Read
CWE-787 Out-of-bounds Write
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
System Score Found at
cvssv3 7.2 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12178.json
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
epss 0.00448 https://api.first.org/data/v1/epss?cve=CVE-2018-12178
cvssv2 6.4 https://nvd.nist.gov/vuln/detail/CVE-2018-12178
cvssv3 9.1 https://nvd.nist.gov/vuln/detail/CVE-2018-12178
Reference id Reference type URL
http://lists.opensuse.org/opensuse-security-announce/2019-03/msg00046.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12178.json
https://api.first.org/data/v1/epss?cve=CVE-2018-12178
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12178
https://edk2-docs.gitbooks.io/security-advisory/content/dns-pack-size-check.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ABTDKZK2G5XP6JCO3HXMPOA2NRTIYDZ/
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03912en_us
1683326 https://bugzilla.redhat.com/show_bug.cgi?id=1683326
924615 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=924615
cpe:2.3:a:tianocore:edk_ii:-:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:tianocore:edk_ii:-:*:*:*:*:*:*:*
CVE-2018-12178 https://nvd.nist.gov/vuln/detail/CVE-2018-12178
USN-4349-1 https://usn.ubuntu.com/4349-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12178.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:N/AC:L/Au:N/C:N/I:P/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12178
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:N/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-12178
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 0.63463
EPSS Score 0.00448
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:20:52.792567+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-12178.json 38.0.0