Security readout for executives and security teams
Plain-English summary
CVE-2016-4025 is a bypass of Avast's DeepScreen sandbox feature in several Avast consumer, business, endpoint, file server, and email server products. In plain terms, malware that should be constrained or inspected by DeepScreen may be able to escape that control path. The sources do not provide CVSS, confirmed patch details, or evidence of active exploitation.
Executive priority
Prioritize this if the organization still runs the listed legacy Avast versions, especially on servers or high-risk endpoints. Without those products, urgency is low. The evidence is incomplete for universal severity, exploit prevalence, and patch status.
Technical view
The CVE describes a DeepScreen bypass through a DeviceIoControl call affecting Avast v11.x product lines and Endpoint/File/Email Server Security v8.x lines. Nettitude's referenced write-up characterizes it as an Avast sandbox escape. The bundle does not include CWE mapping, CVSS scoring, affected CPEs, or authoritative remediation details.
Likely exposure
Exposure is most likely where legacy Avast Internet Security, Pro Antivirus, Premier, Free Antivirus, Business Security v11.x, or Avast endpoint/server security v8.x products remain deployed. Current exposure cannot be inferred from the provided sources.
Exploitation context
The public reference describes escaping Avast's sandbox using a single IOCTL. The CVE record says attackers can bypass DeepScreen via DeviceIoControl. CISA KEV is false in the bundle, and no cited source states active exploitation.
Researcher notes
Focus analysis on the Avast DeepScreen sandbox boundary and DeviceIoControl handling described by the CVE and Nettitude reference. Avoid assuming broader Avast versions are affected. Key missing data: CVSS, CWE, fixed versions, vendor advisory details, and real-world exploitation evidence.
Mitigation direction
- Inventory endpoints and servers for the named Avast v11.x and v8.x products.
- Check Avast guidance for fixed builds, retirement status, or supported migration paths.
- Upgrade or replace affected legacy Avast installations where vendor support is unavailable.
- Treat DeepScreen results from affected hosts as lower assurance until remediated.
Validation and detection
- Confirm installed Avast product names and major versions across managed assets.
- Verify whether DeepScreen is enabled on systems running affected versions.
- Check vendor release notes or support records for CVE-2016-4025 remediation.
- Review security telemetry for suspicious activity on affected legacy hosts.
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
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2016-4025 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
- https://labs.nettitude.com/blog/escaping-avast-sandbox-using-single-ioctl-cve-2016-4025/CVE 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.