CVE-2021-33425: n/a vulnerability

CVE-2021-33425: A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI vers...

A stored cross-site scripting (XSS) vulnerability was discovered in the Web Interface for OpenWRT LuCI version 19.07 which allows attackers to inject arbitrary Javascript in the OpenWRT Hostname via the Hostname Change operation.

UnknownCVSS not scoredNot KEV-listedUpdatedJul 9, 2026, 00:13 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2021-33425 is reported as a stored cross-site scripting issue in the OpenWrt LuCI web interface version 19.07. An attacker could place JavaScript in the device hostname so it is later rendered in the admin interface. Severity, scoring, and exact affected product metadata are incomplete. Potential exposure is OpenWrt devices running LuCI 19.07 where an attacker can influence the configured hostname and an administrator later views it in LuCI. Treat this as a targeted admin-interface risk, not a confirmed emergency. Prioritize exposed or shared-management OpenWrt deployments first, especially where less-trusted users can change hostnames. Mitigation focus: Inventory OpenWrt devices and identify LuCI 19.07 installations.; Check OpenWrt and LuCI vendor guidance for fixed versions or advisories.; Restrict administrative LuCI access to trusted management networks..

Prepared: Jul 11, 2026, 12:09 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: May 25, 2021, 13:41 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

3Timeline events

1ADP providers

1Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
May 20, 2021, 00:00 UTC (UTC+00:00)
CVE publishedCVE Program
The CVE record was published.
May 25, 2021, 13:41 UTC (UTC+00:00)
CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
Jul 9, 2026, 00:13 UTC (UTC+00:00)

ADP provider summaries

Source materials

CVE List V5 sourceCVE List V5

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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