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Vulnerability details: VCID-g5b3-53m2-yug1
Vulnerability ID VCID-g5b3-53m2-yug1
Aliases CVE-2018-16881
Summary rsyslog: imptcp: integer overflow when Octet-Counted TCP Framing is enabled
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 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 https://api.first.org/data/v1/epss?cve=CVE-2018-16881
epss 0.02616 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 5.3 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-2019:2439
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
https://lists.debian.org/debian-lts-announce/2022/05/msg00028.html
1658366 https://bugzilla.redhat.com/show_bug.cgi?id=1658366
cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:*
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:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
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
RHSA-2019:2110 https://access.redhat.com/errata/RHSA-2019:2110
RHSA-2019:2437 https://access.redhat.com/errata/RHSA-2019:2437
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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L 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
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 0.85577
EPSS Score 0.02616
Published At April 1, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-04-01T14:31:08.649068+00:00 RedHat Importer Import https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2018-16881.json 38.0.0