GNU inetutils up to 2.7 telnetd add_slc buffer overflow

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in GNU inetutils up to 2.7 and classified as critical. This impacts the function add_slc of the component telnetd. Performing a manipulation results in buffer overflow. This vulnerability is reported as CVE-2026-32746. The attack is possible to be carried out remotely. Moreover, an exploit is present.

Detailsinfo

A vulnerability was found in GNU inetutils up to 2.7. It has been classified as very critical. This affects the function add_slc of the component telnetd. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2026-32746 since 03/13/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/10/2026).

The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 302234 (Linux Distros Unpatched Vulnerability : CVE-2026-32746), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Exploit-DB (52556), Tenable (302234), EUVD (EUVD-2026-12065) and CERT Bund (WID-SEC-2026-0734). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

  • Open Source InetUtils

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 8.9
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 9.8
CNA Vector (MITRE): 🔒

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 302234
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-32746

Exploit-DB: 🔒

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

03/13/2026 Advisory disclosed
03/13/2026 +0 days CVE reserved
03/13/2026 +0 days VulDB entry created
05/10/2026 +58 days VulDB entry last update

Sourcesinfo

Vendor: gnu.org

Advisory: openwall.com
Status: Not defined

CVE: CVE-2026-32746 (🔒)
GCVE (CVE): GCVE-0-2026-32746
GCVE (VulDB): GCVE-100-350997
EUVD: 🔒
CERT Bund: WID-SEC-2026-0734 - GNU InetUtils: Mehrere Schwachstellen

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/13/2026 20:14
Updated: 05/10/2026 07:45
Changes: 03/13/2026 20:14 (63), 03/14/2026 03:27 (1), 03/16/2026 06:50 (2), 03/16/2026 15:16 (6), 03/20/2026 21:02 (1), 05/10/2026 07:45 (13)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!