CVE-2021-41292

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 1.1%, top 37% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.

Triggered by: NVD CVSS baseline
Sources: epss, ghsa, nvd
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

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

ECOA BAS controller suffers from an authentication bypass vulnerability. An unauthenticated attacker through cookie poisoning can remotely bypass authentication and disclose sensitive information and circumvent physical access controls in smart homes and buildings and manipulate HVAC.

CVSS v3
9.8
EG Score
9.8(medium)
EG Risk
—
EPSS
63.1%
KEV
Not listed

Published

September 30, 2021

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jul 2, 2026
No patch confirmed yet. Sources: cert.
cert

ECOA BAS controller - Broken Authentication-TWCERT/CC台灣電腦網路危機處理暨協調中心|企業資安通報協處|資安情資分享|漏洞通報|資安聯盟|資安電子報

https://www.twcert.org.tw/tw/cp-132-5128-b075a-1.html

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 11× in last 7d / 45× 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. 2026-07-22 22:50 UTCEG score recompute▲ 0.70
  2. 2026-07-22 14:06 UTCEPSS rescore
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  72. 2026-05-26 09:41 UTCGHSA enrichment
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2021-41292?
CVE-2021-41292 is a critical vulnerability published on September 30, 2021. ECOA BAS controller suffers from an authentication bypass vulnerability. An unauthenticated attacker through cookie poisoning can remotely bypass authentication and disclose sensitive information and circumvent physical access controls in smart homes and buildings and manipulate HVAC.
When was CVE-2021-41292 disclosed?
CVE-2021-41292 was first published in the National Vulnerability Database on September 30, 2021, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2021-41292 actively exploited?
CVE-2021-41292 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 63.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2021-41292?
CVE-2021-41292 has a CVSS v3 base score of 9.8 (NVD).
How do I remediate CVE-2021-41292?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-41292, 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.

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