Security readout for executives and security teams
Plain-English summary
CVE-2011-5290 concerns a legacy IDrive Online Backup ActiveX component that could let a remote attacker write files to arbitrary paths. The business risk is mainly for systems still running IDrive Online Backup 3.4.0 or the named OCX in environments where ActiveX can be invoked.
Executive priority
Treat this as a legacy exposure cleanup item with urgency if ActiveX remains enabled. It is not KEV-listed in the provided data, but arbitrary file write can create meaningful endpoint risk where the component is still present.
Technical view
The CVE describes arbitrary file write through the SaveToFile method in UniBasicPack.UniTextBox, contained in UniBasic100_EDA1811C.ocx for IDrive Online Backup 3.4.0. The vulnerable pathname is supplied in the first argument. No CVSS, CWE, patch version, or detailed affected CPE data is provided in the bundle.
Likely exposure
Exposure appears limited to legacy Windows endpoints with IDrive Online Backup 3.4.0 or the UniBasic100_EDA1811C.ocx ActiveX control installed and usable. The provided affected-product metadata is incomplete, so inventory confirmation is required.
Exploitation context
The bundle states remote attackers can write arbitrary files via the control method. It does not cite CISA KEV listing, active exploitation, exploit availability, or observed campaigns, so active exploitation should not be assumed.
Researcher notes
Key gaps are severity scoring, full vendor/product metadata, fixed version, and exploit status. Validate exposure by confirming the exact OCX and product version before rating local risk. Avoid broad conclusions beyond IDrive Online Backup 3.4.0 and the named ActiveX control.
Mitigation direction
- Inventory endpoints for IDrive Online Backup 3.4.0 and UniBasic100_EDA1811C.ocx.
- Remove the legacy software or upgrade according to vendor guidance.
- Disable or restrict ActiveX controls where business use does not require them.
- Limit legacy browser use on systems that handle sensitive data.
- Review the HTBridge advisory and vendor channels for fixed-version guidance.
Validation and detection
- Check software inventory for IDrive Online Backup 3.4.0 installations.
- Search managed endpoints for UniBasic100_EDA1811C.ocx.
- Review browser policy for ActiveX enablement or allowlisting.
- Confirm whether the vulnerable control is registered on Windows endpoints.
- Review endpoint logs for unexplained file creation by browser-related processes.
Public sources used
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
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CVE-2011-5290 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://www.htbridge.com/advisory/HTB23025CVE reference · x_refsource_MISC
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.