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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-15422 Detail

Description

The illumos SCTP inbound path performs association lookup for INIT ACK chunks without adequately validating the address parameters carried in the chunk. Since this lookup runs during packet classification (i.e. before SCTP integrity checks or IPsec policy are applied) a remote, unauthenticated attacker can send a crafted SCTP INIT ACK packet with malformed address parameters to cause an out-of-bounds access and kernel heap corruption, which may lead to remote code execution. The flaw has existed since 2010 (illumos-gate commit a5407c02), and affects any illumos distribution prior to illumos-gate commit 53a3efde.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  illumos
CVSS-BT 9.1 CRITICAL
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/S:P/AU:Y/R:U/V:C/RE:H/U:Red

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/illumos/illumos-gate/commit/53a3efdeff8e6745bbfb69c5360f94962fb79e75 illumos
https://illumos.org/issues/18117 illumos
https://illumos.topicbox.com/groups/developer/Ta1a8e2e1f7f928df/18117-sctp-needs-to-better-check-init-ack-chunk-parameters illumos

Weakness Enumeration

CWE-ID CWE Name Source
CWE-122 Heap-based Buffer Overflow illumos  
CWE-787 Out-of-bounds Write illumos  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-15422
NVD Published Date:
07/16/2026
NVD Last Modified:
07/16/2026
Source:
illumos