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F5 BIG-IP CVE-2026-35062

| EUVDEUVD-2026-29965 HIGH
Incorrect Privilege Assignment (CWE-266)
2026-05-13 f5 GHSA-v5r2-235p-jc3x
7.1
CVSS 4.0 · Vendor: f5
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Severity by source

Vendor (f5) PRIMARY
7.1 HIGH
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/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 (f5) · only source for this CVE.

CVSS VectorVendor: f5

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

5
Re-analysis Queued
May 13, 2026 - 16:22 vuln.today
cvss_changed
Severity Changed
May 13, 2026 - 16:22 NVD
MEDIUM HIGH
CVSS changed
May 13, 2026 - 16:22 NVD
6.5 (MEDIUM) 7.1 (HIGH)
Analysis Generated
May 13, 2026 - 15:52 vuln.today
CVE Published
May 13, 2026 - 14:12 nvd
MEDIUM 6.5

DescriptionCVE.org

An authenticated iControl SOAP user may be able to obtain information of other accounts.

Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

AnalysisAI

Authenticated users of F5 BIG-IP iControl SOAP interface can access account information belonging to other users due to insufficient access controls. The vulnerability affects BIG-IP systems where iControl SOAP is accessible and requires valid authentication credentials to exploit, allowing attackers with legitimate access to enumerate or retrieve confidential account details beyond their authorization scope.

Technical ContextAI

The vulnerability resides in the iControl SOAP API, F5 BIG-IP's management interface that exposes administrative functions via SOAP web services. CWE-266 (Incorrect Privilege Assignment) indicates that the SOAP endpoint fails to properly validate authorization levels when handling account information requests, allowing an authenticated principal to access resources assigned to other accounts. The iControl SOAP interface is commonly used for programmatic administration and monitoring of BIG-IP configurations, making this a high-value attack surface for lateral privilege escalation within administrative environments.

RemediationAI

Apply the vendor-released patch from F5 via advisory K000159021 (https://my.f5.com/manage/s/article/K000159021). F5 account and product support access are required to retrieve and deploy the patch. Pending patch deployment, restrict network access to iControl SOAP ports (typically TCP 443 for management) to trusted administrative hosts and networks using firewall rules or F5's built-in management IP restrictions. Audit iControl SOAP user accounts and disable inactive credentials to reduce lateral movement opportunity from potentially compromised accounts. Monitor iControl SOAP API logs for account enumeration patterns (repeated queries to account endpoints by individual users) as a detective control. Note that access restrictions may limit legitimate management automation and monitoring tools, requiring operational coordination.

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CVE-2026-35062 vulnerability details – vuln.today

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