CVE-2026-8933

golang-github-snapcore-snapd-dev: A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally...

CVE-2026-8933 is fixed in 9 products on 1 platform, first by golang-github-snapcore-snapd-dev 2.76+ubuntu26.04.3, released July 21, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
High
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0018
7th percentile

A local privilege escalation vulnerability exists in snap-confine, a set-capabilities core component used internally by Canonical snapd to construct the secure execution environment for snap applications. This vulnerability uniquely affects versions of snap-confine configured with set-capabilities (rather than standard set-uid-root installations). Due to a flaw in how privilege boundaries or security sandboxes are initialized when the binary runs under limited ambient capabilities, a local, unprivileged attacker can exploit this behavior to bypass intended restrictions and execute arbitrary code. Successful exploitation allows the local user to elevate their privileges to full root authority.

Where it's fixed

ProductFixed inFixReleased
Linux
golang-github-snapcore-snapd-dev · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 golang-github-snapcore-snapd-dev 2.76+ubuntu22.04.1 Jul 23, 2026
golang-github-snapcore-snapd-dev · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 golang-github-snapcore-snapd-dev 2.76+ubuntu24.04.1 Jul 23, 2026
golang-github-snapcore-snapd-dev · Ubuntu 26.04.1 LTS (resolute) 2.76+ubuntu26.04.3 golang-github-snapcore-snapd-dev 2.76+ubuntu26.04.3 Jul 21, 2026
golang-github-ubuntu-core-snappy-dev · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 golang-github-ubuntu-core-snappy-dev 2.76+ubuntu22.04.1 Jul 23, 2026
golang-github-ubuntu-core-snappy-dev · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 golang-github-ubuntu-core-snappy-dev 2.76+ubuntu24.04.1 Jul 23, 2026
snap-confine · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 snap-confine 2.76+ubuntu22.04.1 Jul 23, 2026
snap-confine · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 snap-confine 2.76+ubuntu24.04.1 Jul 23, 2026
snapd · Debian 14 2.76.3-1 DEBIAN-CVE-2026-8933 Jul 21, 2026
snapd · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 snapd 2.76+ubuntu22.04.1 Jul 23, 2026
snapd · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 snapd 2.76+ubuntu24.04.1 Jul 23, 2026
snapd · Ubuntu 26.04.1 LTS (resolute) 2.76+ubuntu26.04.3 snapd 2.76+ubuntu26.04.3 Jul 21, 2026
snapd-xdg-open · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 snapd-xdg-open 2.76+ubuntu22.04.1 Jul 23, 2026
snapd-xdg-open · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 snapd-xdg-open 2.76+ubuntu24.04.1 Jul 23, 2026
ubuntu-core-launcher · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 ubuntu-core-launcher 2.76+ubuntu22.04.1 Jul 23, 2026
ubuntu-core-launcher · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 ubuntu-core-launcher 2.76+ubuntu24.04.1 Jul 23, 2026
ubuntu-core-snapd-units · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 ubuntu-core-snapd-units 2.76+ubuntu22.04.1 Jul 23, 2026
ubuntu-core-snapd-units · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 ubuntu-core-snapd-units 2.76+ubuntu24.04.1 Jul 23, 2026
ubuntu-snappy · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 ubuntu-snappy 2.76+ubuntu22.04.1 Jul 23, 2026
ubuntu-snappy · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 ubuntu-snappy 2.76+ubuntu24.04.1 Jul 23, 2026
ubuntu-snappy-cli · Ubuntu 22.04.1 LTS (jammy) 2.76+ubuntu22.04.1 ubuntu-snappy-cli 2.76+ubuntu22.04.1 Jul 23, 2026
ubuntu-snappy-cli · Ubuntu 24.04.5 LTS (noble) 2.76+ubuntu24.04.1 ubuntu-snappy-cli 2.76+ubuntu24.04.1 Jul 23, 2026

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