VDB-320206 · CVE-2025-54867 · GHSA-j26p-6wx7-f3pw

youki up to 0.5.4 /proc symlink

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in youki up to 0.5.4. The impacted element is an unknown function of the file /proc. Executing a manipulation can lead to symlink. This vulnerability is handled as CVE-2025-54867. It is possible to launch the attack on the local host. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in youki up to 0.5.4 and classified as critical. This vulnerability affects an unknown code block of the file /proc. The manipulation with an unknown input leads to a symlink vulnerability. The CWE definition for the vulnerability is CWE-61. The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Youki is a container runtime written in Rust. Prior to version 0.5.5, if /proc and /sys in the rootfs are symbolic links, they can potentially be exploited to gain access to the host root filesystem. This issue has been patched in version 0.5.5.

The advisory is available at github.com. This vulnerability was named CVE-2025-54867 since 07/31/2025. The exploitation appears to be difficult. Local access is required to approach this attack. Technical details are known, but there is no available exploit.

Upgrading to version 0.5.5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 0d9b4f2aa5ceaf988f3eb568711d2acf0a4ace37 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

youki

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.0
VulDB Temp Score: 6.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.0
CNA Vector (GitHub_M): 🔒

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Symlink
CWE: CWE-61 / CWE-59
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: youki 0.5.5
Patch: 0d9b4f2aa5ceaf988f3eb568711d2acf0a4ace37

Timelineinfo

07/31/2025 CVE reserved
08/14/2025 +14 days Advisory disclosed
08/14/2025 +0 days VulDB entry created
11/11/2025 +89 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-j26p-6wx7-f3pw
Status: Confirmed

CVE: CVE-2025-54867 (🔒)
GCVE (CVE): GCVE-0-2025-54867
GCVE (VulDB): GCVE-100-320206

Entryinfo

Created: 08/14/2025 19:53
Updated: 11/11/2025 02:05
Changes: 08/14/2025 19:53 (67), 11/11/2025 02:05 (1)
Complete: 🔍
Cache ID: 216::103