Detections
Analytics

EXOS < 31.7.4 / 32.0.0 < 32.7.4.15 / 33.0.0 < 33.1.100, 33.7.0 < 33.7.1 Privilege Escalation (SA-2026-088)

high Nessus Plugin ID 350290

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Synopsis

The remote host has a program that is affected by an privilege escalation vulnerability.

Description

The version of EXOS installed on the remote host is missing a security update. It is, therefore, affected by an privilege escalation vulnerability.

 - ExtremeXOS shell environment utilities fail to safely canonicalize paths and can follow symbolic links from a writable user directory to a privileged location (such as /dev) and then invoke those utilities outside of their authorized scope. Exploitation is possible remotely by an attacker holding an admin account, or locally via the serial console.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade EXOS to 31.7.4, 32.7.4.15, 33.1.100, 33.7.1 or later

See Also

https://extreme-networks.my.site.com/ExtrArticleDetail?an=000137696

http://www.nessus.org/u?d12b845e

Plugin Details

Severity: High

ID: 350290

File Name: extreme_networks_exos_SA_2026_088.nasl

Version: 1.2

Type: Remote

Family: Misc.

Published: 9/25/2026

Updated: 9/28/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.12

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 6.7

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

CVSS Score Source: CVE-2026-8170

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 6.3

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: cpe:/o:extremenetworks:extremexos

Required KB Items: installed_sw/Extreme Networks ExtremeXOS

Exploit Ease: No known exploits are available

Patch Publication Date: 8/7/2026

Vulnerability Publication Date: 8/7/2026

Reference Information

CVE: CVE-2026-8170