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  4. CVE 2026 125393 mailenable enterprise premium before 1062 heap
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Back to active CVEs
High · CVSS 7.1CVE-2026-125393

MailEnable Enterprise Premium before 10.62 Heap Overflow via IMAP X-FB-FETCHCVE-2026-125393

Answer in brief

CVE-2026-125393 records a High severity (CVSS 7.1) vulnerability in MailEnable Enterprise Premium before 10.62 Heap Overflow via IMAP X-FB-FETCH. The current sources do not mark it as known exploited. The current feed maps MailEnable/MailEnable Enterprise Premium (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 9, 2026Updated Nov 9, 2026Source checked Nov 10, 2026First seen by HOL Nov 9, 2026Material review Nov 9, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MailEnable/MailEnable Enterprise Premium (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
MailEnable/MailEnable Enterprise Premiumgeneric>=0 <10.6210.62

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for MailEnable/MailEnable Enterprise Premium.
  2. 2Review the reported fix. Update MailEnable/MailEnable Enterprise Premium to 10.62 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 9, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 9, 2026

Sources and claim methodology

  • Source referencemailenable.com
  • Source referencevulncheck.com
Upstream source description

MailEnable Enterprise Premium before 10.62 contains a heap overflow vulnerability in the IMAP X-FB-FETCH command that allows authenticated users to overflow a fixed 0x400-byte heap buffer. Attackers can supply an X-FB-USER address longer than about 1016 bytes, which is formatted without a length check, to crash the IMAP service and cause denial of service.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • Ettercap through 0.8.4.1 Heap Buffer Overflow via Gadu-Gadu DissectorAlso CWE-122

Record context

Vulnerability class
Buffer Overflow
EPSS
Not reported
CWE IDs
CWE-122
Source
CVE List V5
Source checked
Nov 10, 2026
References
2 linked sources
Open source record