CVE-2026-43859
A remote, anonymous attacker can exploit multiple vulnerabilities in mutt to bypass security precautions and cause a denial-of-service condition.
CSIRTS triage
- What
- Multiple vulnerabilities allow a remote attacker to bypass security precautions and cause a denial-of-service condition.
- Who is affected
- Deployments of mutt are affected.
- Urgency
- Remediation is low urgency as exploitation is not currently active and severity is low.
- Action
- No specific action is required at this time.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.16% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 6% of all EPSS-scored CVEs.
Advisory coverage (1)
- low[UPDATE] [low] mutt: Multiple vulnerabilitiescert-bund · 2026-07-02
External references
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[](https://www.csirts.com/cve/CVE-2026-43859)