CVE-2025-62596 json
youki container escape and denial of service due to arbitrary write gadgets and procfs write redirects
published 2025-11-05 12 mo ago modified 2026-10-19 21 d ago also GHSA-vf95-55w6-qmrf , EUVD-2025-37938
- cvss
- 10.0
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 18%
- public exploits
- 0
- none known
Summary
Youki is a container runtime written in Rust. In versions 0.5.6 and below, youki’s apparmor handling performs insufficiently strict write-target validation, and when combined with path substitution during pathname resolution, can allow writes to unintended procfs locations. While resolving a path component-by-component, a shared-mount race can substitute intermediate components and redirect the final target. This issue is fixed in version 0.5.7.
Patch / fix
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 12 mo ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 18% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.3 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H |
| CNA | 4.0 | 7.3 | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H |
| GitHub | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| crates.io | youki | <0.5.7 |
0.5.7 |
Affected products
- youki-dev youki
Classification
References
-
github.com
/youki-dev/youki/commit/5886c91073b9be748bd8d5aed49c4a820548030a
web, patch
-
github.com
/youki-dev/youki/security/advisories/GHSA-vf95-55w6-qmrf
web, vendor-advisory
-
pkg.go.dev
/github.com/cyphar/filepath-securejoin/pathrs-lite/procfs
web, not-applicable
-
youtu.be
/tGseJW_uBB8
web, not-applicable
-
youtu.be
/y1PaBzxwRWQ
web, not-applicable
-
github.com
/opencontainers/runc/security/advisories/GHSA-cgrx-mc8f-2prm
web
-
nvd.nist.gov
/vuln/detail/CVE-2025-62596
advisory
-
github.com
/youki-dev/youki
package
Sources
- CVE List CVE-2025-62596
- GitHub Advisory GHSA-vf95-55w6-qmrf
- NVD CVE-2025-62596
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.