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CVE-2026-16743— Accountsservice: accountsservice: arbitrary file read via seticonfile for systemd-homed users

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.

freedesktop accountsservice是freedesktop组织开源的一套系统账户管理工具。 freedesktop accountsservice存在权限许可和访问控制问题漏洞，该漏洞源于systemd-homed的SetIconFile代码路径以root权限打开用户提供的文件名，未执行验证和权限降级操作，可能导致本地攻击者读取accounts-daemon进程可访问的任意文件。

CVSS 5.5 · Medium EPSS 0.14% · P3

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 7 any unknown
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-16743

Vulnerability Information
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Vulnerability Title
Accountsservice: accountsservice: arbitrary file read via seticonfile for systemd-homed users
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in accountsservice. The systemd-homed code path for SetIconFile opens a user-supplied filename as root without the validation and privilege drop performed by the classic handler. A local attacker with a systemd-homed-managed account can read arbitrary files accessible to the accounts-daemon process.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权管理不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
freedesktop accountsservice 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
freedesktop accountsservice是freedesktop组织开源的一套系统账户管理工具。 freedesktop accountsservice存在权限许可和访问控制问题漏洞，该漏洞源于systemd-homed的SetIconFile代码路径以root权限打开用户提供的文件名，未执行验证和权限降级操作，可能导致本地攻击者读取accounts-daemon进程可访问的任意文件。
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

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 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-16743

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III. Intelligence Information for CVE-2026-16743

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Vendor Advisories for CVE-2026-16743 (2)

Other References for CVE-2026-16743 (1)

Same Patch Batch · Red Hat · 2026-07-24 · 10 CVEs total

CVE-2026-17107 8.5 HIGH Cluster-proxy: impersonation-header injection grants cluster-admin on every managed cluste
CVE-2026-66337 6.5 MEDIUM Libsoup: libsoup: heap buffer over-read via integer underflow in soup_filter_input_stream_
CVE-2026-66339 6.5 MEDIUM Libsoup: libsoup: proxy credentials leak to destination server via proxy-authorization hea
CVE-2026-17059 6.5 MEDIUM Keycloak-services: keycloak-services: information disclosure via role-users endpoint bypas
CVE-2026-17048 5.5 MEDIUM Keycloak-services: keycloak-services: vault-resolved rotated client secrets leaked via adm
CVE-2026-16730 5.5 MEDIUM Dbus-broker: dbus-broker: session bus denial of service via emfile during peer setup
CVE-2026-16910 5.5 MEDIUM Quay: ssrf in red hat quay notification webhooks (slack/generic)
CVE-2026-66338 5.4 MEDIUM Libsoup: libsoup: http request smuggling via permissive chunk-size parsing in soup_body_in
CVE-2026-17039 3.1 LOW Pki-core: dogtag-pki: redhat-pki: pki-core: ca renewal request processing omits realm auth

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-269

V. Comments for CVE-2026-16743

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