# ASUS Routers: Routers Improper Authentication Vulnerability · pwn.watch

> ASUS Lyra Mini and ASUS GT-AC2900 devices contain an improper authentication vulnerability that allows an attacker to gain unauthorized access to the administrative interface. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. Added to CISA KEV on 2025-06-02.

Page: https://pwn.watch/i/asus-routers-cve-2021-32030 · generated 2026-10-22T22:00:08.805Z

## Status
- Severity: critical · status: closed · patch: patched
- Product: ASUS Routers
- Started: 2025-06-02 · closed: 2025-06-02
- CVEs: CVE-2021-32030
- Affected: See vendor advisory / CISA notes (versions not always listed in KEV feed)
- Fixed in: See vendor advisory linked in sources

## Follow this incident
- RSS (one item per update): https://pwn.watch/i/asus-routers-cve-2021-32030/feed.xml
- JSON Feed: https://pwn.watch/i/asus-routers-cve-2021-32030/feed.json
- Full data (timeline, sources, posts, agentBrief): https://pwn.watch/i/asus-routers-cve-2021-32030.json
- This file: https://pwn.watch/i/asus-routers-cve-2021-32030/llms.txt

## Updates (newest first)
- 2025-06-02: CISA added CVE-2021-32030 to the KEV catalog (due 2025-06-23).

## Fix brief
# Security brief: ASUS Routers: Routers Improper Authentication Vulnerability

Source: https://pwn.watch/i/asus-routers-cve-2021-32030 · status: closed (closed Jun 2, 2025) · severity: critical · updated Jun 2, 2025

## Patch status
**PATCHED: fixed releases exist. Upgrade to a fixed version.**

## What it is
ASUS Lyra Mini and ASUS GT-AC2900 devices contain an improper authentication vulnerability that allows an attacker to gain unauthorized access to the administrative interface. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization. Added to CISA KEV on 2025-06-02.

Severity detail: CVSS 9.8 (CISA ADP, v3.1); actively exploited (CISA KEV)

- Product: ASUS Routers
- CVE / advisory ids: CVE-2021-32030

## Affected versions
- See vendor advisory / CISA notes (versions not always listed in KEV feed)

## Check whether you're affected
No generic command applies (the product is a hosted service, appliance or desktop app). Check the installed version in its admin UI / About screen and compare with the versions above.

## Fix
Upgrade to one of these fixed versions (or later on the same branch):
- See vendor advisory linked in sources

After upgrading, re-run the checks above and redeploy/restart the affected services.

## Latest updates
- Jun 2, 2025: CISA added CVE-2021-32030 to the KEV catalog (due 2025-06-23).

## Advisories
- [ASUS advisory: ASUS Routers](https://www.asus.com/us/supportonly/lyra%20mini/helpdesk_bios/) (ASUS)
- [ASUS advisory: ASUS Routers](https://www.asus.com/us/supportonly/rog%20rapture%20gt-ac2900/helpdesk_bios/) (ASUS)
- [NVD: CVE-2021-32030](https://nvd.nist.gov/vuln/detail/CVE-2021-32030) (NVD)
- [CISA Known Exploited Vulnerabilities Catalog](https://www.cisa.gov/known-exploited-vulnerabilities-catalog) (CISA)

## Caveats
Derived from CISA KEV JSON feed catalogVersion 2026.10.21. CVSS from the CVE record (cvelistV5). Exact affected/fixed version strings are not always in the KEV record; verify against the vendor advisory URL. startedAt uses dateAdded (exploitation may have begun earlier; many entries are older CVEs newly confirmed as exploited in 2025). KEV says affected products could be end-of-life, so some devices may never get a fix.

---
Machine-readable: https://pwn.watch/i/asus-routers-cve-2021-32030.json · all incidents: https://pwn.watch/incidents.json. Verify against the vendor advisory before changing production systems.