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CVE-2026-50590
medium
CVSS 4.5
In Mimecast Incydr before 2.6.0, arbitrary file access can occur.
Summary
In Mimecast Incydr before 2.6.0, arbitrary file access can occur.
AI summary snake-internal / snake-template-v1
A weakness called CVE-2026-50590 was discovered in In Mimecast Incydr before.
In plain terms, it is overly permissive file/resource permissions.
Severity is Medium (CVSS 4.5/10). Exploitation requires specific conditions but can cause real harm if successful.
What you should do: update the affected software to the latest version. If unsure, ask your IT team or search the vendor's site for "In Mimecast Incydr before CVE-2026-50590".
CVE-2026-50590 (In Mimecast Incydr before). Severity: Medium / CVSSv3 4.5. Category: CWE-732.
Response plan:
1. Check the vendor advisory for affected versions and the patched release.
2. If a vulnerable version is running in production, schedule maintenance (urgency from KEV/CVSS).
3. If no patch yet, mitigate via WAF rule, disabling the affected feature, etc.
4. Monitor logs / SIEM for known IOC and PoC signatures of this CVE.
PoCs and fix commits: see the 'References' section, MITRE, and NVD.
❓ What is the problem
A weakness (CVE-2026-50590) in In Mimecast Incydr before. In plain words, it is overly permissive file/resource permissions.
📍 Affected scope
Target versions of In Mimecast Incydr before (see vendor advisory). If running in production, identify exposure immediately.
🔥 Severity
Severity: Medium (CVSS 4.5/10). Exploitation requires specific conditions but can cause real harm if successful.
🔧 How to fix
Update to the patched release as listed in the vendor advisory. (Typical mitigation pattern for CWE-732)
🛡️ Workaround
If a patch is not yet available, consider disabling the affected feature, applying WAF rules, blocking via network ACLs, or isolating the vulnerable version.
🔍 Detection
Check version information, scan dependencies via SBOM, and monitor SIEM for IOC and PoC signatures related to this CVE.