CVE-2026-12254 (GCVE-0-2026-12254)

Vulnerability from cvelistv5 – Published: 2026-10-19 15:37 – Updated: 2026-10-20 19:28
VLAI
Title
Netskope Client Captive Portal WebView Persistence allowing SWG bypass issue
Summary
Netskope is notified about a potential gap in its agent (NSClient) where a system with Netskope Client while connecting to an access point with Captive Portal switches to a Network which already has internet connectivity, the Captive Portal does not close. This allows the possibility of abuse via the Captive Portal using a rogue access point to either access malicious sites or exfiltrate data.The issue impacts all versions prior to R142
Severity
6.4 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 19:28 UTC
CWE
  • CWE-613 - Insufficient session expiration
Assigner
Netskope CNA under the mitre root
CNA scorecard – unranked: 7 records in the last 180 days, 10 needed details
References
Impacted products
Vendor Product Version CPE status
Netskope Inc. Netskope Client Affected: 0 , < 142 (custom)
guessed Create a notification for this product.
Date Public
2026-10-16 15:16
Credits
Loïc Croche (Independant security researcher)
Show details on NVD website
To clipboard 

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