CVE-2026-19980: GL.iNet XE3000 Language Update ui.update_langs code injection

Severity: high (CVSS 7.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-17 · updated 2026-08-20
Weakness: CWE-74

Description

A security flaw has been discovered 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 issue is the function ui.update_langs of the component Language Update. Performing a manipulation of the argument hour/min/week results in code injection. The attack can be initiated remotely. The vendor explains: "After our investigation, we have confirmed that the vulnerability described (...) does indeed exist."

Affected products

GL.iNet A1300: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet AX1800: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet AXT1800: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet BE10000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet BE1400: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet BE3600: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet BE6500: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet BE9300: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet E5800: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet MT2500: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet MT3000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet MT3600BE: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet MT5000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet MT6000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet X2000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet X3000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)
GL.iNet XE3000: 4.0, 4.1, 4.2, 4.3, 4.4, 4.5 (+3)

References

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