In Mimecast Incydr before 2.6.0, arbitrary file access can occur.
Priority LOW 19CWE-732Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
In Mimecast Incydr before 2.6.0, arbitrary file access can occur.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0009 0th percentileScored 2026-11-07
Fix Fixed Incydr (Mimecast): 2.6.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA Incydr (Mimecast) Fixed in 2.6.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-50590
- 2026-10-03 Alias added: GHSA-6m3j-hq56-jq77
References
More Mimecast vulnerabilities
- TI-2020-18754 Mimecast Email Security before 2020-01-10 allows any admin to spoof any domain, and pass… CVSS 3.1MEDIUM 4.9
Sources
- CVE-2026-50590 · CVE Program
- CVE-2026-50590 · NVD
- FIRST EPSS
- GHSA-6m3j-hq56-jq77 · GitHub Advisory Database · CC BY 4.0
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