Security readout for executives and security teams
This is an old Opera browser issue affecting versions before 11.65. A crafted website could abuse how Opera handled the first click in a double-click to open a pop-up, making user-assisted XSS or arbitrary code execution easier. The bundle provides no CVSS score or current exploitation evidence. Exposure is most plausible in legacy endpoints, kiosks, virtual desktops, or archived systems still running Opera before 11.65. Modern standard browser fleets are unlikely to be exposed unless old Opera installations remain in use. Treat as a legacy-browser hygiene issue unless old Opera is present. Prioritize verification over emergency response, because the bundle lacks CVSS, KEV listing, or cited active exploitation evidence. Mitigation focus: Inventory endpoints for Opera versions earlier than 11.65.; Upgrade affected Opera installations to 11.65 or later.; Remove unsupported legacy Opera installations where no business need exists..
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
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
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-2012-3556 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
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.