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Inetutils CVE-2026-32746

| EUVD-2026-12065 CRITICAL
Classic Buffer Overflow (CWE-120)
2026-03-13 mitre
Buffer Overflow Inetutils
9.8
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SUSE
CRITICAL
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

3
EUVD ID Assigned
Mar 13, 2026 - 18:00 euvd
EUVD-2026-12065
Analysis Generated
Mar 13, 2026 - 18:00 vuln.today
CVE Published
Mar 13, 2026 - 17:15 nvd
CRITICAL 9.8

DescriptionCVE.org

telnetd in GNU inetutils through 2.7 allows an out-of-bounds write in the LINEMODE SLC (Set Local Characters) suboption handler because add_slc does not check whether the buffer is full.

Articles & Coverage 1

labs.watchtowr.com A 32-Year-Old Bug Walks Into A Telnet Server (GNU inetutils Telnetd CVE-2026-32746 Pre-Auth RCE)

AnalysisAI

OOB write in GNU inetutils telnetd through 2.7 via LINEMODE SLC handler.

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Connect to telnetd service
Exploit
Send crafted LINEMODE SLC suboption
Execution
Trigger out-of-bounds write in add_slc
Impact
Execute arbitrary code with telnetd privileges
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Vulnerability AssessmentAI

Exploitation GNU inetutils telnetd version 2.7 or earlier must be running with LINEMODE negotiation enabled. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment CVSS 9.8. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Send crafted LINEMODE SLC options to trigger OOB write.
Remediation Update inetutils. Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours: Inventory all systems running GNU inetutils telnetd and assess internet exposure; disable telnetd service if not operationally critical and document justification if retention is required. …

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Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Linux Enterprise Server 12 SP5-LTSS Fixed
SUSE Linux Enterprise Server LTSS Extended Security 12 SP5 Fixed
openSUSE Leap 16.0 Fixed
SUSE Linux Enterprise Server 12 SP5 Fixed
SUSE Linux Enterprise Server 12 SP5-LTSS Fixed

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CVE-2026-32746 vulnerability details – vuln.today
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