ubuntu-cve-2026-19654
Vulnerability from osv_ubuntu
Published
2026-08-13 00:00
Modified
2026-08-13 00:00
Summary
Details
A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafted input sequence during oversize-frame recovery can cause an invalid internal message length and terminate rsyslogd. No confidentiality or integrity impact, privilege escalation, or code execution has been identified. imtcp and the default imptcp framing modes are not affected.
Severity
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "7.4.4-1ubuntu2.7"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "7.4.4-1ubuntu2.7"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "7.4.4-1ubuntu2.7"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "7.4.4-1ubuntu2.7"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "7.4.4-1ubuntu2.7"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "7.4.4-1ubuntu2.7"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@7.4.4-1ubuntu2.7?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.8.11-2ubuntu4",
"7.4.4-1ubuntu1",
"7.4.4-1ubuntu2",
"7.4.4-1ubuntu2.1",
"7.4.4-1ubuntu2.3",
"7.4.4-1ubuntu2.5",
"7.4.4-1ubuntu2.6",
"7.4.4-1ubuntu2.7"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.16.0-1ubuntu3.1+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.16.0-1ubuntu3.1+esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.12.0-1ubuntu2",
"8.12.0-1ubuntu3",
"8.14.0-2ubuntu1",
"8.14.0-2ubuntu2",
"8.16.0-1ubuntu1",
"8.16.0-1ubuntu2",
"8.16.0-1ubuntu3",
"8.16.0-1ubuntu3.1",
"8.16.0-1ubuntu3.1+esm1",
"8.16.0-1ubuntu3.1+esm2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-czmq",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-hiredis",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-kafka",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-mongodb",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.32.0-1ubuntu4.2"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.32.0-1ubuntu4.2"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.32.0-1ubuntu4.2?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.16.0-1ubuntu9",
"8.16.0-1ubuntu10",
"8.32.0-1ubuntu3",
"8.32.0-1ubuntu4",
"8.32.0-1ubuntu4.2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-czmq",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-hiredis",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-kafka",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-mongodb",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-openssl",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.2001.0-1ubuntu1.3"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.2001.0-1ubuntu1.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.2001.0-1ubuntu1.3?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.1901.0-1ubuntu4",
"8.2001.0-1ubuntu1",
"8.2001.0-1ubuntu1.1",
"8.2001.0-1ubuntu1.3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-czmq",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-hiredis",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-kafka",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-kubernetes",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-mongodb",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-openssl",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.2112.0-2ubuntu2.4"
},
{
"binary_name": "rsyslog-snmp",
"binary_version": "8.2112.0-2ubuntu2.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.2112.0-2ubuntu2.4?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.2102.0-2ubuntu2",
"8.2110.0-3ubuntu1",
"8.2110.0-3ubuntu2",
"8.2110.0-4ubuntu1",
"8.2112.0-2ubuntu2",
"8.2112.0-2ubuntu2.2",
"8.2112.0-2ubuntu2.4"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-czmq",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-hiredis",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-kafka",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-kubernetes",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-mongodb",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-openssl",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.2312.0-3ubuntu9.3"
},
{
"binary_name": "rsyslog-snmp",
"binary_version": "8.2312.0-3ubuntu9.3"
}
]
},
"package": {
"ecosystem": "Ubuntu:24.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.2312.0-3ubuntu9.3?arch=source\u0026distro=noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.2306.0-2ubuntu2",
"8.2312.0-3ubuntu1",
"8.2312.0-3ubuntu2",
"8.2312.0-3ubuntu3",
"8.2312.0-3ubuntu7",
"8.2312.0-3ubuntu8",
"8.2312.0-3ubuntu9",
"8.2312.0-3ubuntu9.1",
"8.2312.0-3ubuntu9.2",
"8.2312.0-3ubuntu9.3"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "rsyslog",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-clickhouse",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-czmq",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-docker",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-elasticsearch",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-gnutls",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-gssapi",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-hiredis",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-kafka",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-kubernetes",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-mongodb",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-mysql",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-openssl",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-pgsql",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-relp",
"binary_version": "8.2512.0-1ubuntu4.1"
},
{
"binary_name": "rsyslog-snmp",
"binary_version": "8.2512.0-1ubuntu4.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "rsyslog",
"purl": "pkg:deb/ubuntu/rsyslog@8.2512.0-1ubuntu4.1?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"8.2504.0-1ubuntu2",
"8.2512.0-1ubuntu2",
"8.2512.0-1ubuntu3",
"8.2512.0-1ubuntu4",
"8.2512.0-1ubuntu4.1"
]
}
],
"aliases": [],
"details": "A unauthenticated remote peer may lead rsyslogd to crash due to a flaw in the optional imptcp module. A crafted input sequence during oversize-frame recovery can cause an invalid internal message length and terminate rsyslogd. No confidentiality or integrity impact, privilege escalation, or code execution has been identified. imtcp and the default imptcp framing modes are not affected.",
"id": "UBUNTU-CVE-2026-19654",
"modified": "2026-08-13T00:00:00Z",
"published": "2026-08-13T00:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2026-19654"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-19654"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2026-19654"
},
{
"type": "REPORT",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502868"
},
{
"type": "REPORT",
"url": "https://github.com/rsyslog/rsyslog/security/advisories/GHSA-cj5r-wh2m-7w29"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2026-19654"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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