SB2026051260 - NULL pointer dereference in NanoMQ

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Main Vulnerability Database SB2026051260

SB2026051260 - NULL pointer dereference in NanoMQ

Published: May 12, 2026

Security Bulletin ID SB2026051260
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) NULL pointer dereference (CVE-ID: CVE-2026-45151)

CWE-ID: CWE-476 - NULL Pointer Dereference

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to cause a denial of service.

The vulnerability exists due to a null pointer dereference in quic_stream_recv when processing the QUIC multistream receive and reopen path. A remote attacker can trigger a substream reopen state with a null substream pointer to cause a denial of service.

The issue affects the QUIC multistream receive/reopen path and is triggered under specific stream-state timing conditions.


Remediation

Install update from vendor's website.

References