Out-of-Bounds Read in wolfSSHd Windows Terminal Resize Leak

Publication date: 2026-04-20

Last updated on: 2026-04-24

Assigner: wolfSSL Inc.

Description

Potential read out of bounds case with wolfSSHd on Windows while handling a terminal resize request. An authenticated user could trigger the out of bounds read after establishing a connection which would leak the adjacent stack memory to the pseudo-console output.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-04-20

Last Modified

2026-04-24

Generated

2026-07-06

AI Q&A

2026-04-21

EPSS Evaluated

2026-07-05

NVD

CVE-2026-0930

EUVD

EUVD-2026-23950

Affected Vendors & Products

Vendor	Product	Version / Range
wolfssh	wolfssh	From 1.4.15 (inc) to 1.5.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-126	The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.
CWE-125	The product reads data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Impact Analysis

The impact of this vulnerability is that an authenticated user could access memory adjacent to the stack, potentially leaking sensitive information through the pseudo-console output. This could lead to unintended disclosure of data that resides in the adjacent stack memory.

Executive Summary

This vulnerability involves a potential out of bounds read in wolfSSHd on Windows when handling a terminal resize request. An authenticated user who has established a connection can trigger this out of bounds read, which causes adjacent stack memory to be leaked to the pseudo-console output.

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