How severe is CVE-2017-12639?

CVE-2017-12639 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-12639 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-12639?

CVE-2017-12639 affects Ipswitch Imail Server. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-12639?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2017-12639 published?

CVE-2017-12639 was published on 2017-10-03 and last updated on 2026-06-17.

CVE-2017-12639

CVE-2017-12639 is a critical-severity vulnerability in Ipswitch Imail Server with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 3% (83rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Ipswitch Imail Server
Published: 2017-10-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2017-12639?: 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.
How severe is CVE-2017-12639?: CVE-2017-12639 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-12639 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (83rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-12639?: CVE-2017-12639 affects Ipswitch Imail Server. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-12639?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2017-12639 published?: CVE-2017-12639 was published on 2017-10-03 and last updated on 2026-06-17.

References

https://docs.ipswitch.com/_Messaging/IMailServer/v12.5.6/ReleaseNotes/index.htm#link8

Affected products (1)

cpe:2.3:a:ipswitch:imail_server:*:*:*:*:*:*:*:*

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