CVE

CVE-2026-24423

P1⬤ KNOWN RANSOMWARE USE

SmarterTools SmarterMail Missing Authentication for Critical Function Vulnerability

SmarterTools · SmarterMail

Date added (CISA)

2026-02-05

Remediation due

2026-02-26

Known ransomware use

Yes

Remediation priority

P1 — known ransomware use · past CISA due date

ATT&CK mapping

No ATT&CK mapping yet

The CTID Mappings Explorer hasn't published an exploitation/impact technique mapping for this CVE yet.