Security readout for executives and security teams
This CVE describes a flaw in Avast’s handling of signed Windows executable files. A crafted PE file could crash Avast through memory corruption and might allow arbitrary code execution. The source bundle does not identify exact Avast products, affected versions, or an official fix. Exposure is most relevant where Avast software scans Windows PE files, including downloaded, emailed, or transferred executables. The provided CVE data lists affected vendor, product, and versions as not available, so asset teams must confirm exposure against Avast’s own guidance and installed product inventory. Treat this as a targeted legacy exposure review rather than an immediate enterprise-wide emergency, unless current Avast assets match affected versions. Public exploit references raise concern, but source evidence lacks active exploitation, severity scoring, and patch details. Mitigation focus: Check Avast vendor guidance for affected products, versions, and fixed builds.; Update or retire any legacy Avast deployments that match vendor guidance.; Reduce unnecessary handling of untrusted executable files where feasible..
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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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-2016-3986 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://code.google.com/p/google-security-research/issues/detail?id=668CVE reference · x_refsource_MISC
- 39530CVE reference · exploit, x_refsource_EXPLOIT-DB
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.