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CVE-2025-41259— SWUpdate Untrusted Script Execution via Signed Update TOCTOU

Quick assessment

Affected
sbabic SWUpdate
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SWUpdate是Stefano Babic个人开发者的一个嵌入式Linux系统更新工具。 SWUpdate 2026.05之前版本存在安全漏洞，该漏洞源于检查时间与使用时间竞争条件，可能导致本地非特权用户提升权限至root或安装不受信任内容。

AI Predicted 7.8 Difficulty: Moderate EPSS 0.10% · P1

Affected Version Matrix 1

VendorProduct Version RangeStatus
sbabic SWUpdate < 2026.05 affected
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I. Basic Information for CVE-2025-41259

Vulnerability Information
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Vulnerability Title
SWUpdate Untrusted Script Execution via Signed Update TOCTOU
Source: CVE Program / CVE List V5
Vulnerability Description
SWUpdate before 2026.05 is affected by a time-of-check time-of-use (TOCTOU) race condition that allows local unprivileged attackers to escalate privileges to root or install untrusted contents using a signed update.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
检查时间与使用时间(TOCTOU)的竞争条件
Source: CVE Program / CVE List V5
Vulnerability Title
SWUpdate 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SWUpdate是Stefano Babic个人开发者的一个嵌入式Linux系统更新工具。 SWUpdate 2026.05之前版本存在安全漏洞，该漏洞源于检查时间与使用时间竞争条件，可能导致本地非特权用户提升权限至root或安装不受信任内容。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
sbabic SWUpdate 0 ~ 2026.05 -

II. Public POCs for CVE-2025-41259

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III. Intelligence Information for CVE-2025-41259

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Patches & Fixes for CVE-2025-41259 (1)

Vendor Advisories for CVE-2025-41259 (1)

IV. Related Vulnerabilities

Same product: SWUpdate
Same vendor: sbabic
Same weakness: CWE-367

V. Comments for CVE-2025-41259

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