CVE-2026-19900: A vulnerability was identified in LB-LINK X-PRO 1.0.22-20231206

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HIGH 8.1REMOTE

CVE-2026-19900 is a high-severity flaw (CVSS 8.1) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

A vulnerability was identified in LB-LINK X-PRO 1.0.22-20231206. The impacted element is an unknown function of the file /etc/shadow. The manipulation leads to hard-coded credentials. It is possible to initiate the attack remotely. A high degree of complexity is needed for the attack. The exploitability is regarded as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not r

Why this priority

High severity
CISA SSVC: public proof of concept
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	8.1 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	2.9% (top 13%)
CISA exploited list	No
Weakness	CWE-259, CWE-798
Published	2026-08-15
Last modified	2026-08-20

Publisher (CNA): VulDB

Last updated 2026-08-20 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Timeline

2026-08-15 17:16 UTCPublished CVE record published
2026-08-20 12:48 UTCUpdated Record last modified

Exact fixes by distribution

Fedora ELN · gram_grep · FIXED · 0.10.3-2.eln159 · FEDORA-2026-29427819d0 · source

sudo dnf upgrade --advisory=FEDORA-2026-29427819d0

Fedora 46 · python3.11 · FIXED · 3.11.18-1.fc46 · FEDORA-2026-cc775894f4 · source

sudo dnf upgrade --advisory=FEDORA-2026-cc775894f4

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

GitHub PoC: on3sk-0x1/cve-2026-19900-PoC (0 stars)
Write-up: github.com/DavCloudz/cve/blob/main/B-Link/B-Link%20AC1200%20X-PRO(AC6)%20Hardcoded%20Crede
Nuclei scan template: LB-LINK Routers - Unauthenticated Command Injection

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-19900?

No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.

Is CVE-2026-19900 being exploited?

CVE-2026-19900 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-19900 affect?

CVE-2026-19900 affects affected software. Severity is high (CVSS 8.1). A vulnerability was identified in LB-LINK X-PRO 1.0.22-20231206. The impacted element is an unknown function of the file /etc/shadow. The manipulation leads to hard-coded credentials. It is possible to initiate the attack remotely. A high d

How urgent is CVE-2026-19900?

Priority 58/100. High severity; CISA SSVC: public proof of concept; Remotely exploitable, no login, no user action

References

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