CVE-2026-75004
An attacker can exploit multiple vulnerabilities in Roundcube Webmail to execute arbitrary code, gain elevated privileges, bypass security measures, manipulate or disclose data, or conduct cross-site scripting attacks.
CSIRTS triage
- What
- Multiple vulnerabilities enable arbitrary code execution, privilege escalation, security bypass, data manipulation, disclosure, and cross-site scripting attacks.
- Who is affected
- Roundcube Webmail deployments running unpatched versions.
- Urgency
- High severity; not currently exploited but represents significant risk due to code execution and privilege escalation potential.
- Action
- Update Roundcube Webmail to the patched version addressing all identified CVEs (CVE-2026-74997 through CVE-2026-75006).
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[NEW] [high] Roundcube Webmail: Multiple vulnerabilitiescert-bund · 2026-08-18
- mediumCVE-2026-75004: In Roundcube Webmail before 1.6.18 and 1.7.x before 1.7.3, improper rule name quoting could le…nvd · 2026-08-17
External references
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[](https://www.csirts.com/cve/CVE-2026-75004)