FKIE_CVE-2026-4480
Vulnerability from fkie_nvd - Published: 2026-05-26 15:16 - Updated: 2026-07-24 11:10
Severity
9.0 (Critical) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.0 (Critical) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.0 (Critical) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Summary
A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the "print command" setting via the "%J"
substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| redhat | openshift_container_platform | 4.0 | |
| samba | samba | * | |
| redhat | enterprise_linux | 7.0 | |
| redhat | enterprise_linux | 8.0 | |
| redhat | enterprise_linux | 9.0 | |
| redhat | enterprise_linux | 10.0 |
{
"affected": [
{
"affectedData": [
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:10.2"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 10",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.23.5-109.el10_2",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux_eus:10.0"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.21.3-114.el10_0.1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7::server",
"cpe:/o:redhat:rhel_els:7"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.10.16-26.el7_9.1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/o:redhat:enterprise_linux:7::server",
"cpe:/o:redhat:rhel_els:7"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
"vendor": "Red Hat",
"versions": [
{
"lessThan": "*",
"status": "unaffected",
"version": "0:4.10.16-26.el7_9.1",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::appstream",
"cpe:/a:redhat:enterprise_linux:8::crb",
"cpe:/o:redhat:enterprise_linux:8::baseos"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat",
"versions": [
{
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"status": "unaffected",
"version": "0:4.19.4-16.el8_10",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:8::appstream",
"cpe:/a:redhat:enterprise_linux:8::crb",
"cpe:/o:redhat:enterprise_linux:8::baseos"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 8",
"vendor": "Red Hat",
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{
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"status": "unaffected",
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"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/o:redhat:rhel_aus:8.4::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.4::baseos"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
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{
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}
]
},
{
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{
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"versionType": "rpm"
}
]
},
{
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"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
],
"defaultStatus": "affected",
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"product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
"vendor": "Red Hat",
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{
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}
]
},
{
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"cpe:/a:redhat:rhel_eus_long_life:8.6::appstream",
"cpe:/o:redhat:rhel_aus:8.6::baseos",
"cpe:/o:redhat:rhel_eus_long_life:8.6::baseos"
],
"defaultStatus": "affected",
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"product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
"vendor": "Red Hat",
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}
]
},
{
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"cpe:/a:redhat:rhel_tus:8.8::appstream",
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"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
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"packageName": "samba",
"product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
"vendor": "Red Hat",
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"status": "unaffected",
"version": "0:4.17.5-7.el8_8.1",
"versionType": "rpm"
}
]
},
{
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"cpe:/a:redhat:rhel_tus:8.8::appstream",
"cpe:/o:redhat:rhel_e4s:8.8::baseos",
"cpe:/o:redhat:rhel_tus:8.8::baseos"
],
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}
]
},
{
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"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::resilientstorage",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
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"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat",
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{
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"status": "unaffected",
"version": "0:4.23.5-10.el9_8",
"versionType": "rpm"
}
]
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:enterprise_linux:9::appstream",
"cpe:/a:redhat:enterprise_linux:9::crb",
"cpe:/a:redhat:enterprise_linux:9::resilientstorage",
"cpe:/o:redhat:enterprise_linux:9::baseos"
],
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"versionType": "rpm"
}
]
},
{
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"cpes": [
"cpe:/a:redhat:rhel_e4s:9.2::appstream",
"cpe:/a:redhat:rhel_e4s:9.2::resilientstorage",
"cpe:/o:redhat:rhel_e4s:9.2::baseos"
],
"defaultStatus": "affected",
"packageName": "samba",
"product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
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"cpe:/o:redhat:rhel_e4s:9.4::baseos"
],
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"packageName": "samba",
"product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
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}
]
},
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"cpe:/a:redhat:rhel_eus:9.6::crb",
"cpe:/a:redhat:rhel_eus:9.6::resilientstorage",
"cpe:/o:redhat:rhel_eus:9.6::baseos"
],
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],
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"vendor": "Red Hat"
},
{
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"cpes": [
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],
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"packageName": "samba4",
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"vendor": "Red Hat"
},
{
"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "unaffected",
"packageName": "rhcos",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
}
],
"source": "secalert@redhat.com"
},
{
"affectedData": [
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],
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{
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{
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],
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},
{
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],
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{
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],
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],
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},
{
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],
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],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
}
],
"configurations": [
{
"nodes": [
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},
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{
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the \"print command\" setting via the \"%J\"\nsubstitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system."
},
{
"lang": "es",
"value": "Se encontr\u00f3 una falla en el subsistema de impresi\u00f3n de Samba. Samba pasa la cadena de descripci\u00f3n de trabajo controlada por el cliente al comando configurado con la opci\u00f3n \u0027print command\u0027 a trav\u00e9s del car\u00e1cter de sustituci\u00f3n \u0027%J\u0027 sin escapar los metacaracteres de shell. Un atacante remoto podr\u00eda explotar esta vulnerabilidad enviando una descripci\u00f3n de trabajo de impresi\u00f3n especialmente dise\u00f1ada que contenga caracteres de shell sin escapar. Esto podr\u00eda llevar a la ejecuci\u00f3n remota de c\u00f3digo en el sistema afectado."
}
],
"id": "CVE-2026-4480",
"lastModified": "2026-07-24T11:10:00.170",
"metrics": {
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"baseScore": 9.0,
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"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
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},
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"baseScore": 9.8,
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"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
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"options": [
{
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},
{
"automatable": "no"
},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-05-26T00:00:00+00:00",
"version": "2.0.3"
}
}
]
},
"published": "2026-05-26T15:16:40.937",
"references": [
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{
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{
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},
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{
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},
{
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{
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},
{
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{
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{
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{
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{
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"tags": [
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},
{
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"tags": [
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],
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},
{
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4480.json"
}
],
"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "secalert@redhat.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-78"
}
],
"source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
"type": "Secondary"
}
]
}
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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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