Buffer overflow in Tabs Mail Carrier
CVE-2019-25646
Tabs Mail Carrier 2.5.1 contains a buffer overflow vulnerability in the MAIL FROM SMTP command that allows remote attackers to execute arbitrary code by sending a crafted MAIL FROM parameter. Attackers can connect to the SMTP service on port 25 and send a malicious MAIL FROM command with an oversized buffer to overwrite the EIP register and execute a bind shell payload.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (58.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 58.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Tabs Mail Carrier — versions 2.5.1
- Tabslab Mailcarrier — versions 2.5.1
Weakness classification (CWE)
References
- ExploitDB-46547 (Exploit, exploit, Third Party Advisory, VDB Entry)
- VulnCheck Advisory: Tabs Mail Carrier 2.5.1 Buffer Overflow via MAIL FROM (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2019-25646?
- CVE-2019-25646 is a critical-severity vulnerability in Tabs Mail Carrier, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2026-03-24.
- How severe is CVE-2019-25646?
- Critical severity. CVSS v3 base score is 9.8 out of 10.