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Service Bridge CVE-2026-1636

| EUVDEUVD-2026-22919 MEDIUM
Uncontrolled Search Path Element (CWE-427)
2026-04-15 lenovo
5.4
CVSS 4.0 · Vendor: lenovo
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Severity by source

Vendor (lenovo) PRIMARY
5.4 MEDIUM
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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

Primary rating from Vendor (lenovo) · only source for this CVE.

CVSS VectorVendor: lenovo

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

6
Analysis Generated
Jul 26, 2026 - 15:34 vuln.today
Patch released
Apr 17, 2026 - 15:09 nvd
Patch available
Patch available
Apr 16, 2026 - 05:29 EUVD
5.0.2.20
CVSS changed
Apr 15, 2026 - 15:22 NVD
6.7 (MEDIUM) 5.4 (MEDIUM)
EUVD ID Assigned
Apr 15, 2026 - 12:45 euvd
EUVD-2026-22919
CVE Published
Apr 15, 2026 - 12:27 nvd
MEDIUM 5.4

DescriptionCVE.org

A potential DLL hijacking vulnerability was reported in Lenovo Service Bridge that, under certain conditions, could allow a local authenticated user to execute code with elevated privileges.

AnalysisAI

We need to generate a JSON object for CVE-2026-1636. All fields must be plain text strings. Use all provided data: EPSS, KEV not mentioned (so not in KEV), tags, CPE, CVSS 4.0 vector, SSVC, etc.

First, understand the vulnerability: "potential DLL hijacking vulnerability was reported in Lenovo Service Bridge that, under certain conditions, could allow a local authenticated user to execute code with elevated privileges." CWE-427: Uncontrolled Search Path Element (DLL hijacking). CVSS 4.0: AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. That is local, low attack complexity, Attack Requirements: P (present? AT:P means attack requirements present, maybe specific conditions), Privileges Required: Low, User Interaction: Passive (UI:P means limited user interaction, e.g., user must open a file or perform some action). Impact: High on vulnerable system confidentiality, integrity, availability; no impact on subsequent system. This matches the description: local authenticated user, elevated privileges. The vector indicates PR:L, so authenticated. AT:P suggests there are some attack requirements beyond just running code, like needing to place a DLL in a specific path or something.

EPSS 0.01%, percentile 2%, very low exploitation probability. SSVC: exploitation: none, automatable: no, technical impact: total. So not currently exploited, not automatable, total impact if exploited.

Patch available, affected versions: Service Bridge 0 <5.0.2.20 (from EUVD). So fix version is 5.0.2.20 or later. Reference: Lenovo advisory LEN-211071. So we have exact patch.

Now, fields:

product_name: "Lenovo Service Bridge" (3 words)

summary: Synthesize a 2-3 sentence plain-language summary, not copying description. Start with impact verb and product. For example: "Elevation of privilege in Lenovo Service Bridge allows a local authenticated user to execute code with elevated privileges via DLL hijacking." Then mention who is affected (Lenovo Service Bridge prior to 5.0.2.20), and that p

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CVE-2026-1636 vulnerability details – vuln.today

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