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CVE-2026-113496— Cockpit-machines: vnc console password disclosure through virt-xml command-line arguments

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 cockpit-machines 中发现了一个漏洞。在保存虚拟网络计算（VNC）控制台设置时，配置的密码会直接作为命令行参数传递给底层系统工具。在允许跨用户进程检查的主机上，本地非特权攻击者可以在其他用户修改设置时，通过进程列表读取到暴露的密码。此类凭证泄露可能导致未经授权访问客户机虚拟机的图形控制台。

CVSS 5.0 · Medium

Possible ATT&CK Techniques 1 AI

T1056.004 · Credential API Hooking
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I. Basic Information for CVE-2026-113496

Vulnerability Information
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Vulnerability Title
Cockpit-machines: vnc console password disclosure through virt-xml command-line arguments
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in cockpit-machines. When saving Virtual Network Computing (VNC) console settings, the configured password is passed directly as a command-line argument to an underlying system utility. A local unprivileged attacker on a host that allows cross-user process inspection could read the exposed password from the process list while another user modifies settings. This credential disclosure can allow unauthorized access to the guest virtual machine's graphical console.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过处理环境导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-113496

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III. Intelligence Information for CVE-2026-113496

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Vendor Advisories for CVE-2026-113496 (2)

Same Patch Batch · Red Hat · 2026-10-20 · 6 CVEs total

CVE-2026-105312 9.9 CRITICAL Console-operator: streams for apache kafka console: tenant-controlled container image on c
CVE-2026-105941 8.1 HIGH Kroxylicious-kms-provider-azure-key-vault-kms: streams for apache kafka kroxylicious: azur
CVE-2026-105311 7.7 HIGH Console-operator: streams for apache kafka console: cross-namespace kafkauser secret exfil
CVE-2026-112177 7.3 HIGH Ghostscript: reintroduction of .charkeys -dsafer bypass in rhel 8
CVE-2026-113495 5.0 MEDIUM Cockpit-machines: rhsm access-token disclosure through image helper command-line arguments

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-214

V. Comments for CVE-2026-113496

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