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CVE-2026-4480— Samba: samba: remote code execution in printing subsystem via unescaped job description

CVSS 8.5 · High EPSS 0.08% · P23

Possible ATT&CK Techniques 1AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-4480

Vulnerability Information
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Vulnerability Title
Samba: samba: remote code execution in printing subsystem via unescaped job description
Source: NVD (National Vulnerability Database)
Vulnerability Description
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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Samba 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Samba是Samba开源的一个适用于 Linux 和 Unix 的标准 Windows 互操作性程序套件。 Samba存在操作系统命令注入漏洞，该漏洞源于将客户端控制的作业描述字符串传递给打印命令时未转义shell元字符，可能导致远程攻击者通过特制打印作业描述执行远程代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
Red HatRed Hat Enterprise Linux 10-cpe:/o:redhat:enterprise_linux:10
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 6-cpe:/o:redhat:enterprise_linux:6
Red HatRed Hat Enterprise Linux 7-cpe:/o:redhat:enterprise_linux:7
Red HatRed Hat Enterprise Linux 8-cpe:/o:redhat:enterprise_linux:8
Red HatRed Hat Enterprise Linux 9-cpe:/o:redhat:enterprise_linux:9
Red HatRed Hat OpenShift Container Platform 4-cpe:/a:redhat:openshift:4

II. Public POCs for CVE-2026-4480

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III. Intelligence Information for CVE-2026-4480

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Patches & Fixes for CVE-2026-4480 (1)

Vendor Advisories for CVE-2026-4480 (1)

Other References for CVE-2026-4480 (1)

Same Patch Batch · Red Hat · 2026-05-26 · 7 CVEs total

CVE-2026-73749.9 CRITICALKubevirt: kubevirt virt-handler: privilege escalation and node compromise via symlink foll
CVE-2026-420138.2 HIGHGnutls: gnutls: certificate validation bypass due to oversized subject alternative name
CVE-2026-52608.2 HIGHGnutls: gnutls: information disclosure via heap overread in rsa key exchange
CVE-2026-488647.8 HIGHLibsolv: heap buffer overflow in libsolv repopagestore via unchecked decompression of mali
CVE-2026-420127.1 HIGHGnutls: gnutls: certificate validation bypass due to improper handling of uri and srv sans
CVE-2026-420155.3 MEDIUMGnutls: gnutls: memory corruption due to off-by-one error in pkcs#12 bag handling

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-78

V. Comments for CVE-2026-4480

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