CVE-2023-37927

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

1.75% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 75.9% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2023-11-30 01:34Z2 YR AGO

Last updated

2025-02-13 17:01Z1 YR AGO

Reserved

2023-07-11

Assigning CNA

Zyxel

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')Base

Data version

5.1

Document digest

5c025af9d713b4465e8bbb11f5d5cec50777a628e095d739250e105d5cf9855c

• www.zyxel.comhttps://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-authentication-bypass-and-command-injection-vulnerabilities-in-nas-productsvendor-advisory
• bugprove.comhttps://bugprove.com/knowledge-hub/cve-2023-37927-and-cve-2023-37928-multiple-post-auth-blind-os-command-and-python-code-injection-vulnerabilities-in-zyxel-s-nas-326-devices/