CVE-2026-43864

A flaw was found in mutt. This vulnerability, a null pointer dereference in the showsigsummary function, could allow an attacker to cause a denial of service. This occurs when processing specially crafted input related to signature summaries. Mitigation Mitigation for this issue is either not...

CVE-2026-43864

creationtimestamp| type| source ---|---|--- 2026-05-04 20:12:36+00:00| seen| https://infosec.exchange/users/vuldb/statuses/116518129175813131...

CVE-2026-43864

Affected product: mutt. Vulnerability: show_sig_summary NULL pointer dereference in mutt before 2.3.2. Root cause: NULL pointer dereference in show_sig_summary. Impact: low (CVSS: LOW, LOCAL, user interaction required). References indicate a fix in the project history (commit linked). Remediation...

Linux Distros Unpatched Vulnerability : CVE-2026-43864

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mutt before 2.3.2 has a showsigsummary NULL pointer dereference. CVE-2026-43864 Note that Nessus relies on the presence of the package as reported by the vendor...