01 Record
CVE-2026-12254
Netskope Client Captive Portal WebView Persistence allowing SWG bypass issue
MediumPUBLISHEDCNA: Netskope
CNA base score6.4 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H
02 Description
Netskope Client Captive Portal WebView Persistence allowing SWG bypass issue
03 Exploitation and scoring
- Exploitation
- Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
- SSVC decision
- ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
- EPSS probability
- 0.31% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 23.8% of scored records. A rank, not a probability.
- NVD base score
- 6.4 (CVSS v4.0), scored by the NVD independently of the CNA.
- NVD CVSS vector
- 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/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
- NVD analysis status
- Awaiting Analysis. NVD last modified this record on 2026-10-20.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2026-10-19 15:37Z9 DAYS AGO
- Last updated
- 2026-10-21 16:31Z7 DAYS AGO
- Reserved
- 2026-06-15
- Assigning CNA
- Netskope
- Record state
- PUBLISHED
- Severity
- Medium (CVSS 6.4)
- CNA CVSS vector
- 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
- Weaknesses
- CWE-613Insufficient Session ExpirationBase
- Data version
- 5.2
- Document digest
- 158bdde98bba64b77d41dbbbd4adf3680b34bba4030ddfc210f2f09244611a2e
05 Affected products
VendorProductVersionsPlatforms
06 References
07 Remediation
Netskope has fixed the gap and released the patch as listed below: R142 and above R141 (141.1.7.2827 and above) R138 (138.1.15.2826 and above) R135 (135.1.26.2824 and above)