Is CVE-2017-12639 actively exploited?

No active exploitation of CVE-2017-12639 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2017-12639 be exploited remotely?

Yes. CVE-2017-12639 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2017-12639?

CVE-2017-12639 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2017-12639

CRITICAL

CVE-2017-12639

CWE-119Published: October 3, 2017· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

Stack based buffer overflow in Ipswitch IMail server up to and including 12.5.5 allows remote attackers to execute arbitrary code via unspecified vectors in IMmailSrv, aka ETRE or ETCTERARED.

NVD Source

Technical Analysis

CVE-2017-12639 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.