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Vulnerability details: VCID-627v-gasm-xff1
Vulnerability ID VCID-627v-gasm-xff1
Aliases CVE-2018-19755
Summary Improper Input Validation There is an illegal address access at asm/preproc.c (function: is_mmacro) in Netwide Assembler (NASM) rc16 that will cause a denial of service (out-of-bounds array access) because a certain conversion can result in a negative integer.
Status Published
Exploitability 0.5
Weighted Severity 6.3
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-20 Improper Input Validation
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-125 Out-of-bounds Read
System Score Found at
cvssv3 7.0 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19755.json
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2018-19755
epss 0.00138 https://api.first.org/data/v1/epss?cve=CVE-2018-19755
cvssv3 4.4 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Reference id Reference type URL
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19755.json
https://api.first.org/data/v1/epss?cve=CVE-2018-19755
https://bugzilla.nasm.us/show_bug.cgi?id=3392528
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19755
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://repo.or.cz/nasm.git/commit/3079f7966dbed4497e36d5067cbfd896a90358cb
1656210 https://bugzilla.redhat.com/show_bug.cgi?id=1656210
915087 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=915087
CVE-2018-19755 https://nvd.nist.gov/vuln/detail/CVE-2018-19755
No exploits are available.
Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-19755.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:L/PR:N/UI:R/S:U/C:N/I:L/A:L 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
Exploit Prediction Scoring System (EPSS)
Percentile 0.33503
EPSS Score 0.00138
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:38:38.952091+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/nasm/CVE-2018-19755.yml 38.6.0