Read the docs
TI-2019-15699 Aliases CVE-2019-25646GHSA-xg62-w69q-69pg

Tabs Mail Carrier 2.5.1 Buffer Overflow via MAIL FROM

Priority HIGH 81CWE-787Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-787 and the CVSS impact.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00928 60th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TabsMail Carrier2.5.1—No fix listedCNA
  • Mail Carrier VendorTabs Affected 2.5.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:tabslab:mailcarrier:2.5.1:*:*:*:*:*:*:*2.5.1VulnerableTabslab
  • cpe:2.3:a:tabslab:mailcarrier:2.5.1:*:*:*:*:*:*:* Versions 2.5.1 Vulnerable ·Tabslab

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-25646
  2. 2026-10-03 Alias added: GHSA-xg62-w69q-69pg

References

Exploit 1

  • TI-2019-15417 Win10 MailCarrier 2.51 - 'POP3 User' Remote Buffer Overflow CVSS 4.0CRITICAL 9.3
  • TI-2019-08511 A buffer overflow in MailCarrier 2.51 allows remote attackers to execute arbitrary code… CVSS 3.0CRITICAL 9.8
  • TI-2019-08744 A buffer overflow in the SMTP response service in MailCarrier 2.51 allows the attacker to… CVSS 3.0CRITICAL 9.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences