CVE-2026-4480 (GCVE-0-2026-4480)
Vulnerability from cvelistv5 – Published: 2026-05-26 13:56 – Updated: 2026-07-15 00:53
VLAI
EPSS
VEX
Title
Samba: samba: remote code execution in printing subsystem via unescaped job description
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.
Severity
9 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-05-26 00:00 UTC
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
15 references
Impacted products
28 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 10 |
Unaffected:
0:4.23.5-109.el10_2 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:10.2 |
||
| Red Hat | Red Hat Enterprise Linux 10.0 Extended Update Support |
Unaffected:
0:4.21.3-114.el10_0.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux_eus:10.0 |
||
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:4.10.16-26.el7_9.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:7::server cpe:/o:redhat:rhel_els:7 |
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.19.4-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8::appstream cpe:/a:redhat:enterprise_linux:8::crb cpe:/o:redhat:enterprise_linux:8::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:4.13.3-12.el8_4.1 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.13.3-12.el8_4.1 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4::baseos cpe:/o:redhat:rhel_eus_long_life:8.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:4.15.5-16.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6::appstream 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 |
||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.15.5-16.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6::appstream 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 |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:4.17.5-7.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:4.17.5-7.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8::appstream cpe:/a:redhat:rhel_tus:8.8::appstream cpe:/o:redhat:rhel_e4s:8.8::baseos cpe:/o:redhat:rhel_tus:8.8::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:4.23.5-10.el9_8 , < *
(rpm)
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 |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:4.17.5-105.el9_2.5 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2::appstream cpe:/a:redhat:rhel_e4s:9.2::resilientstorage cpe:/o:redhat:rhel_e4s:9.2::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:4.19.4-105.el9_4.4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4::appstream cpe:/a:redhat:rhel_e4s:9.4::resilientstorage cpe:/o:redhat:rhel_e4s:9.4::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:4.21.3-14.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6::appstream cpe:/a:redhat:rhel_eus:9.6::crb cpe:/a:redhat:rhel_eus:9.6::resilientstorage cpe:/o:redhat:rhel_eus:9.6::baseos |
||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
||
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
||
| Red Hat | Red Hat Enterprise Linux 7 Extended Lifecycle Support |
Unaffected:
0:4.10.16-26.el7_9.1 , < *
(rpm)
cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:rhel_els:7 |
||
| Red Hat | Red Hat Enterprise Linux 8 |
Unaffected:
0:4.19.4-16.el8_10 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:8 |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support |
Unaffected:
0:4.13.3-12.el8_4.1 , < *
(rpm)
cpe:/o:redhat:rhel_aus:8.4 |
||
| Red Hat | Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.13.3-12.el8_4.1 , < *
(rpm)
cpe:/o:redhat:rhel_eus_long_life:8.4 |
||
| Red Hat | Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support |
Unaffected:
0:4.15.5-16.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_aus:8.6 |
||
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On |
Unaffected:
0:4.15.5-16.el8_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus_long_life:8.6 |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Telecommunications Update Service |
Unaffected:
0:4.17.5-7.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_tus:8.8 |
||
| Red Hat | Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions |
Unaffected:
0:4.17.5-7.el8_8.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:8.8 |
||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:4.23.5-10.el9_8 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9 cpe:/o:redhat:enterprise_linux:9 |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions |
Unaffected:
0:4.17.5-105.el9_2.5 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.2 |
||
| Red Hat | Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions |
Unaffected:
0:4.19.4-105.el9_4.4 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.4 |
||
| Red Hat | Red Hat Enterprise Linux 9.6 Extended Update Support |
Unaffected:
0:4.21.3-14.el9_6.1 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.6 |
Date Public
2026-05-26 13:43
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"cve": "CVE-2026-4480",
"id": "CVE-2026-4480",
"initial_release_date": "2026-05-26T13:43:46.237000+00:00",
"product_status:fixed": "4182",
"product_status:known_affected": "29",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "samba: Samba: Remote Code Execution in printing subsystem via unescaped job description",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4480.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "critical",
"current_release_date": "2026-07-31T16:56:25Z",
"cve": "CVE-2026-4480",
"id": "CVE-2026-4480",
"initial_release_date": "2026-05-27T02:53:02Z",
"product_status:known_affected": "934",
"product_status:recommended": "863",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2026-4480",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-4480.json",
"version": "13"
},
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{\"url\": \"https://access.redhat.com/errata/RHSA-2026:28056\", \"name\": \"RHSA-2026:28056\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:28057\", \"name\": \"RHSA-2026:28057\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:28058\", \"name\": \"RHSA-2026:28058\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/errata/RHSA-2026:28132\", \"name\": \"RHSA-2026:28132\", \"tags\": [\"vendor-advisory\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://access.redhat.com/security/cve/CVE-2026-4480\", \"tags\": [\"vdb-entry\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.redhat.com/show_bug.cgi?id=2452232\", \"name\": \"RHBZ#2452232\", \"tags\": [\"issue-tracking\", \"x_refsource_REDHAT\"]}, {\"url\": \"https://bugzilla.samba.org/show_bug.cgi?id=16033\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Remove ```\\\"%J\\\"``` from the \\\"print command\\\" in ```smb.conf``` entry.\"}], \"x_generator\": {\"engine\": \"cvelib 1.8.0\"}, \"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.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-78\", \"description\": \"Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"shortName\": \"redhat\", \"dateUpdated\": \"2026-06-30T03:43:10.051Z\"}, \"x_redhatCweChain\": \"CWE-78: Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)\"}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-4480\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-06-30T03:43:10.051Z\", \"dateReserved\": \"2026-03-19T21:17:35.193Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-05-26T13:56:32.355Z\", \"assignerShortName\": \"redhat\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
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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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