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CVE-2021-26797

29
FAUCET Score

CVE-2021-26797 is a critical access control vulnerability affecting Hame SD1 Wi-Fi firmware versions up to V.20140224154640. An unauthenticated attacker can exploit an open Telnet service to gain full system administrator privileges on affected devices. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with low attack complexity, allowing for complete compromise of confidentiality, integrity, and availability. While no public exploit code or active exploitation has been observed, and community discussion is minimal, the high severity warrants attention.

Impacted Technologies

VendorProductVersion(s)CPE
<= 20140224154640CPE matchmatch criteria
cpe:2.3:o:hametech:hame_sd1_wi-fi_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.35%
Probability of exploitation in next 30 days
EPSS Percentile
68.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0135 is in the 55th percentile among its peer group of 36,862 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

le0nc.blogspot.com / 2021/04/cve-2021-26797-access-control.html
ExploitThird Party Advisory