# CVE-2024-49393: Mutt: neomutt: to and cc email header fields are not protected by cryptographic signing

Status: published. Published: 2024-11-12. Updated: 2026-11-05.

In neomutt and mutt, the To and Cc email headers are not validated by cryptographic signing which allows an attacker that intercepts a message to change their value and include himself as a one of the recipients to compromise message confidentiality.

## Remediation

No remediation reported in collected sources

## Affected products and versions

-  /  (mutt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 10 (mutt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (mutt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (mutt): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 9 (mutt): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.33% as of 2026-11-04; percentile 25.94%

- SSVC: exploitation none; automatable no; technical impact total; source ADP: CISA-ADP

- Weaknesses: CWE-347

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://access.redhat.com/security/cve/CVE-2024-49393 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2325317 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://github.com/neomutt/neomutt/issues/4223 (CNA: redhat)

- https://github.com/neomutt/neomutt/pull/4221 (CNA: redhat)

- https://github.com/neomutt/neomutt/pull/4227 (CNA: redhat)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2024-49393; retrieved 2026-11-05; source updated 2026-11-05

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2024-49393; retrieved 2026-11-05; source updated Not reported

Revision: e822b2f4b422ba46159efa091df3ca1aa268f05432b46916f58ae5d841644fc1

Canonical: https://y2.dev/cve/CVE-2024-49393

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