libssh SFTP Message SSH_FXP_NAME null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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3.3$0-$5k0.00

Summaryinfo

A vulnerability was found in libssh. It has been classified as problematic. This affects an unknown function of the component SFTP Message Handler. Performing a manipulation of the argument SSH_FXP_NAME results in null pointer dereference. This vulnerability is identified as CVE-2026-0968. The attack can be initiated remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, was found in libssh (unknown version). This affects an unknown code block of the component SFTP Message Handler. The manipulation of the argument SSH_FXP_NAME with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on availability. The summary by CVE is:

A flaw was found in libssh in which a malicious SFTP (SSH File Transfer Protocol) server can exploit this by sending a malformed 'longname' field within an `SSH_FXP_NAME` message during a file listing operation. This missing null check can lead to reading beyond allocated memory on the heap. This can cause unexpected behavior or lead to a denial of service (DoS) due to application crashes.

The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2026-0968. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 298579 (Linux Distros Unpatched Vulnerability : CVE-2026-0968), 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 Tenable (298579), EUVD (EUVD-2026-16335) and CERT Bund (WID-SEC-2026-0446). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

  • Red Hat Enterprise Linux
  • Ubuntu Linux
  • SUSE Linux
  • SUSE openSUSE
  • Open Source libssh
  • Meinberg LANTIME

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.3
VulDB Meta Temp Score: 3.3

VulDB Base Score: 3.7
VulDB Temp Score: 3.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 3.1
NVD Vector: 🔒

CNA Base Score: 3.1
CNA Vector: 🔒

CVSSv2info

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

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 298579
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-0968

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔒

Timelineinfo

02/11/2026 Advisory disclosed
02/11/2026 +0 days VulDB entry created
05/19/2026 +97 days VulDB entry last update

Sourcesinfo

Advisory: bugzilla.redhat.com
Status: Not defined

CVE: CVE-2026-0968 (🔒)
GCVE (CVE): GCVE-0-2026-0968
GCVE (VulDB): GCVE-100-345441
EUVD: 🔒
CERT Bund: WID-SEC-2026-0446 - libssh: Mehrere Schwachstellen ermöglichen Manipulation von Dateien und DoS

Entryinfo

Created: 02/11/2026 05:34
Updated: 05/19/2026 18:37
Changes: 02/11/2026 05:34 (49), 02/11/2026 19:37 (2), 02/18/2026 15:38 (7), 04/19/2026 13:55 (1), 05/19/2026 12:32 (22), 05/19/2026 18:37 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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