Detections
Analytics

7-Zip >= 9.18 < 26.01 SquashFS Integer Overflow (GHSL-2026-115_GHSL-2026-122)

high Nessus Plugin ID 318788

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Synopsis

The remote host has an application installed that is potentially affected by a vulnerability.

Description

The version of 7-Zip installed on the remote Windows host is >= 9.18 and prior to 26.01. It is, therefore, potentially affected by a vulnerability:

 - An integer overflow in the SquashFS fragment offset handling can lead to a crash when processing a crafted SquashFS archive. This vulnerability only affects 32-bit builds of 7-Zip. (CVE-2026-48092)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. Additionally, Nessus cannot determine whether the installed build is 32-bit or 64-bit.

Solution

Upgrade to 7-Zip version 26.01 or later.

See Also

http://www.nessus.org/u?6f6968b6

Plugin Details

Severity: High

ID: 318788

File Name: 7zip_26_01_CVE-2026-48092.nasl

Version: 1.3

Type: Local

Agent: windows

Family: Windows

Published: 6/5/2026

Updated: 6/9/2026

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: High

Base Score: 9.4

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:N/A:C

CVSS Score Source: CVE-2026-48092

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:7-zip:7-zip

Required KB Items: installed_sw/7-Zip

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/22/2026

Vulnerability Publication Date: 5/22/2026

Reference Information

CVE: CVE-2026-48092

IAVA: 2026-A-0525