CVE-2019-25646 Tabs Mail Carrier 2.5.1 Buffer Overflow via MAIL FROM
Remote attackers can execute arbitrary code on Tabs Mail Carrier by sending a crafted MAIL FROM SMTP command that triggers a buffer overflow.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-25646?
CVE-2019-25646 is a critical memory corruption vulnerability in Tabs Mail Carrier, published on 24 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-787
Which versions are affected by CVE-2019-25646?
It affects 1 product.
Products include Tabslab Mailcarrier.
How do I fix CVE-2019-25646?
No fix has been published for CVE-2019-25646 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-25646 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25646 exists.
Other vulnerabilities in Tabs Mail Carrier
Sources
Also known as GHSA-xg62-w69q-69pg.