Security readout for executives and security teams
This is a legacy Opera browser flaw. Before version 11.65, Opera could associate keyboard input with a hidden window, enabling a malicious site to abuse user interaction for cross-site scripting or possible code execution. The sources do not provide a CVSS score, CWE, or evidence of active exploitation. Exposure is most likely limited to environments still running Opera versions before 11.65. Modern supported browsers are not identified as affected in the supplied sources. Asset inventories, software telemetry, and proxy user-agent data are the best indicators of residual risk. Prioritize as legacy exposure cleanup. It is not KEV-listed, and severity data is incomplete, but affected unsupported browsers on sensitive workstations should be removed promptly because the reported impact includes XSS and possible code execution. Mitigation focus: Upgrade any Opera browser older than 11.65 or replace it with a supported browser.; Check Opera vendor changelogs and support guidance for version-specific remediation details.; Remove unsupported legacy browsers from managed endpoints..
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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Execution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2012-3555 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
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.