Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.
総合評価: CVE-2021-41133 は中リスク（46.9/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.41%、32 パーセンタイル） 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置（高いほど相対的に深刻）を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ（新 − 旧） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.06% | 0.41% | +0.35% |
| 2 | 2025-10-11 | 0.04% | 0.06% | +0.02% |
| 3 | 2025-09-07 | — | 0.04% | — |
EPSS の全履歴 （全 15 件）
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.0 | 6.0 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 4.6 | 2.0 | MEDIUM |
|
3.9 | 6.4 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2021-41133: 1 source package rows (flatpak); 9 state rows across 7 repos (3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 2. | https://security.alpinelinux.org/vuln/CVE-2021-41133 |
debian
|
not yet assigned | CVE-2021-41133 not yet assigned priority: Debian including 1 source packages (flatpak), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-41133 |
gentoo
|
high | CVE-2021-41133: 1 GLSA(s) (202312-12), 1 atom(s) (sys-apps/flatpak); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-41133 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2021-41133 |
suse
|
high | CVE-2021-41133 severity important: SUSE including 76 source package names (flatpak, flatpak-0.10.4-150000.4.13.1, …), 137 product×package rows across 25 product lines (SUSE CaaS Platform 4.0, SUSE Enterprise Storage 6, … (25 product lines)): Fixed 131, Known Not Affected 6. | https://www.suse.com/security/cve/CVE-2021-41133/ |
ubuntu
|
medium | CVE-2021-41133 medium priority: Ubuntu including 1 source packages (flatpak), 8 status rows across 8 suites (bionic, focal, hirsute, impish, jammy, trusty, upstream, xenial): released 5, DNE 1, ignored 1, not-affected 1. | https://ubuntu.com/security/CVE-2021-41133 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| flatpak | flatpak | < 1.8.2 | cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:* |
| flatpak | flatpak | >= 1.10.0, < 1.10.4 | cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:* |
| flatpak | flatpak | >= 1.11.1, < 1.12.1 | cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:* |
| debian | debian_linux | 11.0 | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
| fedoraproject | fedora | 33 | cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* |
| fedoraproject | fedora | 34 | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* |