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CVE-2026-20032

Cisco NX-OS Software Python Sandbox Escape Vulnerability

Medium4.4EPSS 0.11%
Published
Updated
Reserved
Assigned by
cisco

Description

A vulnerability in the Python interpreter of Cisco NX-OS Software could allow an authenticated, local attacker with low privileges to escape the Python sandbox and gain unauthorized access to the underlying operating system of an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by manipulating specific functions within the Python interpreter. A successful exploit could allow an attacker to escape the Python sandbox and execute arbitrary commands on the underlying operating system with the privileges of the authenticated user.

Timeline

  1. ID reserved

    By cisco

  2. · 12 months later

    Published

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-20032, by who scored it
Scored byCVSSScoreVector
ciscoCNA (assigner)3.1Medium4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
NVDNVD · Awaiting Analysis3.1Medium4.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
EPSS (exploitation in 30 days)
0.11% · top 99% of all CVEs (7 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.4.

Weakness

Affected products

  • Cisco · Cisco NX-OS Software

    • affected 8.2(5)
    • affected 7.3(5)D1(1)
    • affected 8.4(2)
    • affected 8.4(3)
    • affected 9.2(3)
    • affected 8.2(1)
    • affected 7.3(1)D1(1)
    • affected 9.2(2v)
    • affected 7.3(0)D1(1)
    • affected 7.3(4)D1(1)
    • affected 9.2(1)
    • affected 9.2(2t)
    • affected 9.2(3y)
    • affected 9.3(2)
    • affected 7.3(1)DY(1)
    • affected 8.1(1)
    • affected 8.2(2)
    • affected 8.3(2)
    • affected 7.3(2)D1(3a)
    • affected 9.2(4)
    • affected 8.1(2)
    • affected 7.3(3)D1(1)
    • affected 8.2(3)
    • affected 8.3(1)
    • affected 8.4(1)
    • affected 8.1(1b)
    • affected 7.3(0)DX(1)
    • affected 7.3(2)D1(1)
    • affected 9.3(1)
    • affected 7.3(2)D1(2)
    • affected 8.2(4)
    • affected 7.3(0)DY(1)
    • affected 9.3(1z)
    • affected 9.2(2)
    • affected 8.1(2a)
    • affected 7.3(2)D1(3)
    • affected 8.1(1a)
    • affected 8.4(1a)
    • affected 9.3(3)
    • affected 7.3(2)D1(1d)
    • and 103 more

What to do

Exploitation: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

CVE-2026-20032 badge
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Record last updated .