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VulnerabilityCVE-2023-26801Published 2023-03-26

CVE-2023-26801

criticalPublic exploit1 PoC repo

As of 2025-05-05, CVE-2023-26801 is a CRITICAL-severity vulnerability, CVSS v3.1 9.8, EPSS 69.6% (99.3th percentile). Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2023-26801, most recently “ClingSTUN Linux Backdoor Turns Unpatched IoT Devices Into Proxy Nodes via Public STUN Infrastructure”.

CVSS v3.1
9.8/10Critical
EPSS
69.6%Higher than 99.3% of scored CVEs
CISA KEV
NoNot in the KEV catalog
Tracked threats
2Campaigns referencing it
Priority
10/10Threadlinqs triage score
Published
Updated 2025-05-05
CVSS v3.1 9.8 (CRITICAL) · EPSS 69.6% (higher than 99.3% of all scored CVEs) · Priority 10/10 · Published 2023-03-26

Last updated:

What is CVE-2023-26801?

LB-LINK BL-AC1900_2.0 v1.0.1, LB-LINK BL-WR9000 v2.4.9, LB-LINK BL-X26 v1.2.5, and LB-LINK BL-LTE300 v1.0.8 were discovered to contain a command injection vulnerability via the mac, time1, and time2 parameters at /goform/set_LimitClient_cfg.

The record classifies CVE-2023-26801 under weakness class CWE-77. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. The identifier was first published 1308 days ago.

Severity and exploitation probability

CVSS v3.1 base score
9.8 — CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (FIRST)
69.6% probability of exploitation in the next 30 days, higher than 99.3% of all scored CVEs
CISA KEV
Not listed in the CISA Known Exploited Vulnerabilities catalog
Threadlinqs priority
10/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
Published
2023-03-26, last modified 2025-05-05

Is CVE-2023-26801 being exploited?

Weaponised exploit code for CVE-2023-26801 is publicly available. 1 public proof-of-concept repository is tracked for this identifier. It currently carries a trending score of 38 in the Threadlinqs vulnerability feed.

Affected products and versions

No affected-product or package list has been recorded for CVE-2023-26801 in the tracked sources. The vendor advisory and the references below are the authoritative statement of what is affected.

How to fix CVE-2023-26801

No vendor patch reference has been recorded for CVE-2023-26801 in the tracked sources. Follow the references below for a fix, and treat any affected deployment as exposed until the vendor states otherwise.

Threat activity tracking CVE-2023-26801

2 tracked threats in the Threadlinqs corpus reference CVE-2023-26801, either in the campaign’s CVE list or as an indicator on the campaign record.

Sources

Enriched from CVE.org, FIRST EPSS, public proof-of-concept repositories. Last verified by Threadlinqs on .

Other references