CVE-2021-26797

CRITICALNVD 9.89.8—

9.8

An access control vulnerability in Hame SD1 Wi-Fi firmware <=V.20140224154640 allows an attacker to get system administrator through an open Telnet service.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 59.5%
KEV: Not listed

Published

April 26, 2021

Last Modified

November 21, 2024

References (2)

cve@mitrehttps://le0nc.blogspot.com/2021/04/cve-2021-26797-access-control.html
af854a3a-2127-422b-91ae-364da2661108https://le0nc.blogspot.com/2021/04/cve-2021-26797-access-control.html

Weakness Classification(1)

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

CWE-521Weak Password Requirements

Data Freshness Timeline

(refreshed 11× in last 7d / 18× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 17:29 UTCEG score recompute
2026-05-26 17:28 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2021-26797?

CVE-2021-26797 is a critical vulnerability published on April 26, 2021. An access control vulnerability in Hame SD1 Wi-Fi firmware <=V.20140224154640 allows an attacker to get system administrator through an open Telnet service.

When was CVE-2021-26797 disclosed?

CVE-2021-26797 was first published in the National Vulnerability Database on April 26, 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-2021-26797 actively exploited?

CVE-2021-26797 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 59.5% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-26797?

CVE-2021-26797 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2021-26797?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-26797, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-26797

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CVE-2021-26797

📅 Published

🔄 Last Modified

🔗 References (2)