Security readout for executives and security teams
Plain-English summary
Trend Micro Email Encryption Gateway 5.5 has a password-protection weakness. If an attacker already gains access to the product's user database, the flaw may let them recover user passwords. The main business risk is credential exposure after a database compromise, not a simple remote attack path.
Executive priority
Prioritize review if this product protects sensitive email workflows or shares credentials with other systems. The issue is less urgent than a remotely exploitable flaw, but database exposure could turn into password compromise.
Technical view
CVE-2018-10355 is an authentication weakness in Trend Micro Email Encryption Gateway 5.5. The reported flaw is in the DBCrypto class and can allow recovery of user passwords from the user database. Exploitation requires prior access to that database. No CVSS score or CWE is provided in the bundle.
Likely exposure
Exposure appears limited to organizations running Trend Micro Email Encryption Gateway 5.5, especially where the application database, backups, or administrative interfaces are reachable by untrusted users.
Exploitation context
The source bundle does not cite active exploitation, and the CVE is not listed as CISA KEV. Exploitation depends on first obtaining access to the target system's user database.
Researcher notes
Key uncertainty is missing severity data and unavailable detail in the source bundle beyond the password-recovery condition. Do not assume remote exploitability. Focus validation on version presence, database access paths, backup exposure, and credential reuse risk.
Mitigation direction
- Check Trend Micro's advisory for the supported fix or upgrade path.
- Inventory all Email Encryption Gateway instances and confirm deployed versions.
- Restrict and audit access to the product user database and backups.
- Rotate affected user passwords if database access is suspected.
- Retire or isolate unsupported version 5.5 deployments.
Validation and detection
- Confirm whether any deployed instance is Trend Micro Email Encryption Gateway 5.5.
- Review administrative and database access logs for unusual access.
- Verify database backups are protected with least-privilege access controls.
- Confirm remediation status against Trend Micro's published guidance.
- Assess whether recovered credentials could access other business systems.
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.
Database behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2018-10355 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.zerodayinitiative.com/advisories/ZDI-18-411/CVE reference · x_refsource_MISC
- https://success.trendmicro.com/solution/1119349CVE reference · x_refsource_CONFIRM
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.