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Vulnerability details: VCID-bm6x-1h16-kyap
Vulnerability ID VCID-bm6x-1h16-kyap
Aliases CVE-2018-16881
Summary A denial of service vulnerability was found in rsyslog in the imptcp module. An attacker could send a specially crafted message to the imptcp socket, which would cause rsyslog to crash. Versions before 8.27.0 are vulnerable.
Status Published
Exploitability 0.5
Weighted Severity 6.8
Risk 3.4
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-190 Integer Overflow or Wraparound
System Score Found at
cvssv3 5.3 https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16881.json
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.01859 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02768 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
cvssv3 7.5 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 5.0 https://nvd.nist.gov/vuln/detail/CVE-2018-16881
cvssv3.1 7.5 https://nvd.nist.gov/vuln/detail/CVE-2018-16881
Reference id Reference type URL
https://access.redhat.com/errata/RHBA-2019:2501
https://access.redhat.com/errata/RHSA-2019:2110
https://access.redhat.com/errata/RHSA-2019:2437
https://access.redhat.com/errata/RHSA-2019:2439
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16881.json
https://api.first.org/data/v1/epss?cve=CVE-2018-16881
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16881
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-16881
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
1658366 https://bugzilla.redhat.com/show_bug.cgi?id=1658366
cpe:2.3:a:redhat:virtualization_manager:4.3:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:virtualization_manager:4.3:*:*:*:*:*:*:*
cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:rsyslog:rsyslog:*:*:*:*:*:*:*:*
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_for_ibm_z_systems:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing: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_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-2018-16881 https://nvd.nist.gov/vuln/detail/CVE-2018-16881
USN-5419-1 https://usn.ubuntu.com/5419-1/
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L Found at https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16881.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:N/UI:N/S:U/C:N/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:N/I:N/A:P Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16881
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:L/PR:N/UI:N/S:U/C:N/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2018-16881
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 0.82277
EPSS Score 0.01859
Published At July 30, 2025, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2025-07-31T08:39:37.487130+00:00 Ubuntu USN Importer Import https://usn.ubuntu.com/5419-1/ 37.0.0