Security readout for executives and security teams
CVE-2018-0251 is a cross-site scripting issue in Cisco ASA Clientless SSL VPN portal authentication pages. An attacker would need to lure a portal user into opening a crafted link. If successful, script could run in that portal context and potentially expose browser-accessible information. Exposure is most likely where Cisco ASA Clientless SSL VPN portals are enabled and reachable by users, especially internet-facing VPN portals running vulnerable ASA Software releases on the affected Cisco platforms named in the CVE record. Treat this as a timely VPN-edge hygiene item, not a confirmed emergency from the provided evidence. Prioritize externally reachable ASA SSL VPN portals because compromise would occur in a trusted security portal context. Mitigation focus: Check Cisco advisory cisco-sa-20180418-asawvpn2 for affected and fixed ASA releases.; Upgrade or remediate only according to Cisco’s published guidance for the deployed ASA release.; Limit VPN portal exposure where operationally feasible until affected status is resolved..
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
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ATT&CK lookup starting points
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CWE-79: User-session and phishing behavior lookup
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Open ATT&CK lookupCVE-2018-0251 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-asawvpn2CVE reference · x_refsource_CONFIRM
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.