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CVE-2021-26620

25
FAUCET Score

CVE-2021-26620 describes an improper authentication vulnerability in iptime NAS2dual devices, allowing remote attackers to steal sensitive information. This high-severity vulnerability (CVSS 7.5) has a low attack complexity and requires no user interaction, leading to a high impact on confidentiality. While no public exploits or active exploitation have been observed, and community discussion is minimal, the potential for unauthorized data access remains a concern.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.4.82CPE matchmatch criteria
cpe:2.3:o:iptime:nas101_firmware:*:*:*:*:*:windows:*:*
< 1.4.82CPE matchmatch criteria
cpe:2.3:o:iptime:nas1dual_firmware:*:*:*:*:*:windows:*:*
< 1.4.82CPE matchmatch criteria
cpe:2.3:o:iptime:nas2dual_firmware:*:*:*:*:*:windows:*:*
< 1.4.82CPE matchmatch criteria
cpe:2.3:o:iptime:nas3_firmware:*:*:*:*:*:windows:*:*
< 1.4.82CPE matchmatch criteria
cpe:2.3:o:iptime:nas4_firmware:*:*:*:*:*:windows:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.33%
Probability of exploitation in next 30 days
EPSS Percentile
68.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0133 is in the 48th percentile among its peer group of 51,551 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

krcert.or.kr / krcert/secNoticeView.do
Third Party Advisory