Denial of Service in Pix-Link LV-WR21Q
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
A vulnerability in the Pix-Link LV-WR21Q router's language module allows remote attackers to trigger a denial of service (DoS) by sending a specially crafted HTTP POST request containing non-existing language parameter. This renders the server unable to serve correct lang.js file, which causes administrator panel to not work, resulting in DoS until the language settings is reverted to a correct value. The Denial of Service affects only the administrator panel and does not affect other router functionalities. The vendor was notified early about this vulnerability, but didn't respond with the details of vulnerability or vulnerable version range. Only version V108_108 was tested and confirmed as vulnerable, other versions were not tested and might also be vulnerable.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2025-12387
- 2026-10-03 Alias added: GHSA-292q-v67v-f66g
References
More Pix-Link vulnerabilities
- TI-2025-11363 Missing Authentication for Critical Endpoint in Pix-Link LV-WR21Q CVSS 4.0MEDIUM 6.9
- TI-2020-14799 XSS on the PIX-Link Repeater/Router LV-WR07 with firmware v28K.Router.20170904 allows… CVSS 3.1MEDIUM 6.1
- TI-2019-08905 XSS on the PIX-Link Repeater/Router LV-WR09 with firmware v28K.MiniRouter.20180616 allows… CVSS 3.0MEDIUM 6.1
- TI-2021-19547 Pix-Link MiNi Router 28K.MiniRouter.20190211 was discovered to contain a stored… CVSS 3.1MEDIUM 5.4
- TI-2021-19546 Pix-Link MiNi Router 28K.MiniRouter.20190211 was discovered to contain a stored… CVSS 3.1MEDIUM 5.4
Sources
- CVE-2025-12387 · CVE Program
- CVE-2025-12387 · NVD
- FIRST EPSS
- GHSA-292q-v67v-f66g · GitHub Advisory Database · CC BY 4.0
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