CVE-2026-19900

HIGHPre-NVD 8.18.1—
EchelonGraph scoreHIGH confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-08-15. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 5 sources updated this weekElevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 8.1Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 respond in any way.

CVSS v3
8.1
EG Score
8.1(high)
EG Risk
52(Track*)
EG Risk 52/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
2%
EPSS %ILE
77%
KEV
Not listed

Published

August 15, 2026

Last Modified

August 20, 2026

Advisory Details (1)

Auto-updated Aug 15, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

cve/B-Link/B-Link AC1200 X-PRO(AC6) Hardcoded Credentials Vulnerability.md at main · DavCloudz/cve · GitHub

https://github.com/DavCloudz/cve/blob/main/B-Link/B-Link%20AC1200%20X-PRO(AC6)%20Hardcoded%20Credentials%20Vulnerability.md

Vendor Advisories for CVE-2026-19900(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 30× in last 7d / 30× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-08-21 01:18 UTCEG score recompute
  2. 2026-08-21 01:18 UTCGHSA enrichment
  3. 2026-08-20 22:55 UTCEPSS rescore
  4. 2026-08-20 13:01 UTCGHSA enrichment
  5. 2026-08-20 07:59 UTCGHSA enrichment
  6. 2026-08-19 19:42 UTCEG score recompute
  7. 2026-08-19 19:42 UTCGHSA enrichment
  8. 2026-08-19 17:03 UTCEPSS rescore
  9. 2026-08-19 07:24 UTCGHSA enrichment
  10. 2026-08-18 19:08 UTCEG score recompute
  11. 2026-08-18 19:08 UTCGHSA enrichment
  12. 2026-08-18 13:48 UTCEPSS rescore
  13. 2026-08-18 06:50 UTCGHSA enrichment
  14. 2026-08-17 18:34 UTCEG score recompute
  15. 2026-08-17 18:33 UTCGHSA enrichment
  16. 2026-08-17 18:26 UTCNVD updateCVSS v4 → 8.2
  17. 2026-08-17 17:49 UTCEG score recompute
  18. 2026-08-17 17:49 UTCGHSA enrichment
  19. 2026-08-17 17:44 UTCMITRE cvelistV5CVSS v4 → 9.2
  20. 2026-08-17 13:47 UTCEPSS rescore
  21. 2026-08-17 06:11 UTCGHSA enrichment
  22. 2026-08-16 17:55 UTCEG score recompute
  23. 2026-08-16 17:55 UTCGHSA enrichment
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 05:37 UTCEG score recompute
Show 5 more
  1. 2026-08-16 05:37 UTCGHSA enrichment
  2. 2026-08-15 17:21 UTCEG score recompute
  3. 2026-08-15 17:20 UTCNVD updateCVSS v4 → 8.2
  4. 2026-08-15 16:53 UTCEG score recompute
  5. 2026-08-15 16:51 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-19900.yaml
    First seen Jan 1, 2026

    LB-LINK Routers - Unauthenticated Command Injection

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-19900?
CVE-2026-19900 is a high vulnerability published on August 15, 2026. 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…
When was CVE-2026-19900 disclosed?
CVE-2026-19900 was first published in the National Vulnerability Database on August 15, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19900 actively exploited?
CVE-2026-19900 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 23.3% of all scored CVEs.
What is the CVSS score of CVE-2026-19900?
CVE-2026-19900 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-19900?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19900, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-19900

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