Critical Injection exploit reference

CVE-2026-18612 — GL-iNet GL-MT3000 plugins.so Native Plugin glc plugins.install_package command injection

A flaw has been found in GL-iNet GL-MT3000 up to 4.4.5. This vulnerability affects the function plugins.remove_package/plugins.install_package of the file /cgi-bin/glc of the component plugins.so Native Plugin. This manipulation causes command injection. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

Published Aug 3, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

Technical severity (critical)+10
CISA SSVC: exploitation "poc"+5
Automatable exploitation (SSVC)+3

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

—

No EPSS score.

Affects

GL.iNet

GL-MT3000

CVSS base

9.8

Critical · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

Proof of concept

none · proof-of-concept · active

Automatable

Yes

can an attacker script the kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (GL.iNet GL-MT3000).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (injection), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
GL.iNet	GL-MT3000	version 4.4.0version 4.4.1version 4.4.2version 4.4.3version 4.4.4version 4.4.5	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
9.3	CVSS 4.0	Critical	—	—	VulDB via CVE Program (cve.org) e CISA ADP
8.9	CVSS 4.0	High	—	—	cna@vuldb.com via NIST National Vulnerability Database
9.8	CVSS 3.1	Critical	3.9	5.9	cna@vuldb.com via NIST National Vulnerability Database
9.8	CVSS 3.1	Critical	—	—	VulDB via CVE Program (cve.org) e CISA ADP
9.8	CVSS 3.0	Critical	—	—	VulDB via CVE Program (cve.org) e CISA ADP
10.0	CVSS 2.0	High	10.0	10.0	cna@vuldb.com via NIST National Vulnerability Database
10.0	CVSS 2.0	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-74 · Injection

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Look for parameters with command/query metacharacters and unexpected child processes of the service.

web/proxy/WAF logsnetwork IDS/IPSapplication logsendpoint telemetry (EDR)

Timeline

What happened to this CVE, newest first.

2026
Affected products added · gl-inet/gl-mt3000
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 9.8
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Aug 3, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

8 on the record

vuldb.com/vuln/385532/cti
signature, permissions-required, NIST National Vulnerability Database
vuldb.com/submit/851600
third-party-advisory, NIST National Vulnerability Database
vuldb.com/vuln/385532
vdb-entry, technical-description, NIST National Vulnerability Database
vuldb.com/submit/851596
third-party-advisory, NIST National Vulnerability Database
vuldb.com/cve/CVE-2026-18612
third-party-advisory, NIST National Vulnerability Database
vuldb.com/submit/851597
third-party-advisory, NIST National Vulnerability Database
github.com/StrTzz123/iot_vul/blob/main/GL-iNet/MT3000/4.4.5/plugins_package_name
exploit, NIST National Vulnerability Database
vuldb.com/submit/851553
third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

GL.iNet
every CVE for this vendor

Injection
same class

CWE-74
other pages naming this weakness

Related CVEs (same products)

Critical CVE-2026-18686 GL.iNet GL-MT3000 nas-web RPC Wrapper glc nas-web.add_user command injection Aug 3, 2026
Critical CVE-2026-18685 GL.iNet GL-MT3000 modem.so glc set_upgrade command injection Aug 3, 2026
Critical CVE-2026-18684 GL.iNet GL-MT3000 modem.so glc remove_profile command injection Aug 3, 2026
Critical CVE-2026-18615 GL-iNet GL-MT3000 wg-server.so Native Plugin glc wg-server.generate_publickey command injection Aug 3, 2026
Critical CVE-2026-18614 GL-iNet GL-MT3000 s2s.so Native Plugin glc s2s.enable_echo_server command injection Aug 3, 2026
Critical CVE-2026-18616 GL-iNet GL-MT3000 wg-server.so Native Plugin glc server.set_peer command injection Aug 3, 2026

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No FIRST EPSS score.
No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-18612 is "GL-iNet GL-MT3000 plugins.so Native Plugin glc plugins.install_package command injection", rated Critical. It affects GL-MT3000 (GL.iNet); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 9.8 describes technical severity. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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