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

5.3MediumCVSS base score
0.39%Exploitation in 30 daysEPSS · top 66% of all CVEs
NoKnown exploitednot in CISA's KEV catalog
NonePublic exploitsnone known yet

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."

Timeline

2026
16 Aug 2026
16 Aug 2026
ID reserved
By VulDB
17 Aug 20261 day later
17 Aug 2026· 1 day later
Published
19 Aug 20262 days later
19 Aug 2026· 2 days later
Record updated

Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.

Scores

CVSS scores of CVE-2026-19980, by who scored it
Scored by	CVSS	Score	Vector
VulDBCNA (assigner)	4.0	Medium5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X
VulDBCNA (assigner)	3.1	High7.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:X/RL:X/RC:R
VulDBCNA (assigner)	3.0	High7.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L/E:X/RL:X/RC:R
VulDBCNA (assigner)	2.0	Medium6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:ND/RL:ND/RC:UR
NVDNVD · Deferred	4.0	Medium5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS (exploitation in 30 days): 0.39% · top 66% of all CVEs (14 Nov 2026)
CISA SSVC: Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Affected products

GL.iNet · A1300
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · AX1800
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · AXT1800
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · BE1400
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · BE3600
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · BE6500
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · BE9300
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · BE10000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · E5800
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · MT2500
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · MT3000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · MT3600BE
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · MT5000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · MT6000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · X2000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · X3000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8
GL.iNet · XE3000
- affected 4.0
- affected 4.1
- affected 4.2
- affected 4.3
- affected 4.4
- affected 4.5
- affected 4.6
- affected 4.7
- affected 4.8

References5

VDB-391162 | GL.iNet XE3000 Language Update ui.update_langs code injection (opens in a new tab)vdb-entrytechnical-description
VDB-391162 | CTI Indicators (IOB, IOC, TTP, IOA) (opens in a new tab)signaturepermissions-required
CVE-2026-19980 | CVE Analysis and Report (opens in a new tab)third-party-advisory
Submit #873916 | GL.iNet Router 4.8.x RCE (opens in a new tab)third-party-advisory
https://github.com/gl-inet/CVE-issues/blob/main/4.0.0/Language%20Auto-Update%20Cron%20RCE.md (opens in a new tab)patch

Sources

The same CVE in the primary databases and aggregators, to check against.

Badge for a README or a ticket

[![CVE-2026-19980](https://cveledger.app/badge/CVE-2026-19980.svg)](https://cveledger.app/cve/CVE-2026-19980)

Record last updated 19 Aug 2026, 14:51 UTC.