Security readout for executives and security teams
This flaw affects Symantec and Norton security products that inspect email or MIME content. A specially modified message could crash the scanning component or allow remote code execution. Because affected products often sit on endpoints, mail gateways, and servers, unpatched legacy deployments should be treated as a meaningful business risk. Exposure is most likely in legacy Symantec or Norton deployments that still run versions older than the fixed builds listed in the CVE description, especially email security gateways, Exchange or Domino security products, Protection Engine integrations, endpoint protection, and server protection tools that parse inbound messages or MIME content. Treat as high priority for organizations still running legacy Symantec or Norton security infrastructure. The business concern is that protective tools may become an attack path. Immediate urgency depends on whether affected products are still deployed and whether they process inbound mail or untrusted content. Mitigation focus: Inventory all Symantec and Norton products named in the CVE description.; Upgrade affected products to the fixed versions or hotfixes listed by Symantec.; Prioritize mail gateways, Exchange, Domino, SPE, and endpoint scanning components..
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-2016-3644 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://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=&suid=20160628_00CVE reference · x_refsource_CONFIRM
- 40034CVE 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.