CVE-2023-26801
CriticalExploitedPublic exploitLB-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.
Published Mar 26, 2023 · Updated May 5, 2025
Key Facts
Patch immediately- CVE-2023-26801 is a critical-severity vulnerability (CVSS 9.8 v3.1) affecting Bl-Ac1900 Firmware (Lb-Link), Bl-Lte300 Firmware (Lb-Link), Bl-Wr9000 Firmware (Lb-Link) and 1 more product.
- It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Feb 1, 2023. Public exploit code is available.
- EPSS estimates a 70% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v3.1
9.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS (30-day exploit likelihood)
70%
Higher than 99.3% of all scored CVEs
Exploited in the wild
Yes
2 catalog listings
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2023-26801 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
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.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Feb 1, 2023 | n/a | Not reported |
| CIRCL KEV | Oct 13, 2023 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
4 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Bl-Ac1900 FirmwareLb-Link | 1.0.1 | n/a |
| Bl-Lte300 FirmwareLb-Link | 1.0.8 | n/a |
| Bl-Wr9000 FirmwareLb-Link | 2.4.9 | n/a |
| Bl-X26 FirmwareLb-Link | 1.2.5 | n/a |
Timeline
Added to Industry KEV feed
Feb 1, 2023
Publicly disclosed
Mar 26, 2023
Added to CIRCL KEV
Oct 13, 2023
Last updated
May 5, 2025
Weakness Type
- CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
References
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
FAQ
Common Questions.
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.
Affected: Bl-Ac1900 Firmware (Lb-Link) versions 1.0.1; Bl-Lte300 Firmware (Lb-Link) versions 1.0.8; Bl-Wr9000 Firmware (Lb-Link) versions 2.4.9, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed, CIRCL KEV since Feb 1, 2023.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
Is CVE-2023-26801 Running On Your Attack Surface?
Brandefense maps vulnerabilities like this one to your internet-facing assets and tells you exactly where to patch.
Request A Demo