Auth bypass in Gl.inet A1300
CVE-2026-19979
A vulnerability was identified in GL.iNet A1300, AX1800, AXT1800, BE1400, BE3600, BE6500, BE9300, BE10000, E5800, MT2500, MT3000, MT3600BE, MT5000, MT6000, X2000, X3000 and XE3000 up to 4.8.x. Affected by this vulnerability is the function COPY/MOVE of the component WebDAV Service. Such manipulation leads to authorization bypass. It is possible to launch the attack remotely. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (43.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Gl.inet A1300 — versions 4.0, 4.1, 4.2
- Gl.inet Ax1800 — versions 4.0, 4.1, 4.2
- Gl.inet Axt1800 — versions 4.0, 4.1, 4.2
- Gl.inet Be10000 — versions 4.0, 4.1, 4.2
- Gl.inet Be1400 — versions 4.0, 4.1, 4.2
- Gl.inet Be3600 — versions 4.0, 4.1, 4.2
- Gl.inet Be6500 — versions 4.0, 4.1, 4.2
- Gl.inet Be9300 — versions 4.0, 4.1, 4.2
- Gl.inet E5800 — versions 4.0, 4.1, 4.2
- Gl.inet Mt2500 — versions 4.0, 4.1, 4.2
Weakness classification (CWE)
References
- vuldb.com/vuln/391161 (technical-description, vdb-entry)
- vuldb.com/vuln/391161/cti (signature, permissions-required)
- vuldb.com/cve/CVE-2026-19979 (third-party-advisory)
- vuldb.com/submit/873915 (third-party-advisory)
- github.com/gl-inet/CVE-issues/blob/main/4.0.0/WebDAV Public-Share Destination A… (related)
Frequently asked questions
- What is CVE-2026-19979?
- CVE-2026-19979 is a high-severity vulnerability in Gl.inet A1300, classified under Improper Authorization. CVSS score: 8.3/10. Published 2026-08-17.
- How severe is CVE-2026-19979?
- High severity. CVSS v3 base score is 8.3 out of 10.