IPTIME NAS2dual improper authentication vulnerability
Priority LOW 36CWE-287Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
An improper authentication vulnerability leading to information leakage was discovered in iptime NAS2dual. Remote attackers are able to steal important information in the server by exploiting vulnerabilities such as insufficient authentication when accessing the shared folder and changing user’s passwords.
Why it matters now
EPSS 0.0135 71st percentileScored 2026-11-07
Fix Fixed ipTIME NAS product (NAS1, 2, 3, 4, 1dual, 2dual 4dual) (EFM Networks Co., Ltd): 1.4.82
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| EFM | ipTIME NAS product (NAS1, 2, 3, 4, 1dual, 2dual 4dual) | before 1.4.82 | 1.4.82 | Patch available | CNA |
- ipTIME NAS product (NAS1, 2, 3, 4, 1dual, 2dual 4dual) VendorEFM Affected before 1.4.82 Fixed in 1.4.82 Patch available CNA
CPE configurations NVD · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:iptime:nas101_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas101:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas1dual_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas1dual:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas2dual_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas2dual:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas3_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas4_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
- cpe:2.3:o:iptime:nas101_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas101:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas1dual_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas1dual:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas2dual_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas2dual:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas3_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas4_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:iptime:nas4dual_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas4dual:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas-i_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas-i:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas-ii_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas-ii:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
| cpe:2.3:o:iptime:nas-iie_firmware:*:*:*:*:*:windows:*:* | before 1.4.82 | Vulnerable | EFM |
| cpe:2.3:h:iptime:nas-iie:-:*:*:*:*:*:*:* | not specified by NVD | Running on | EFM |
- cpe:2.3:o:iptime:nas4dual_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas4dual:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas-i_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas-i:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas-ii_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas-ii:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
- cpe:2.3:o:iptime:nas-iie_firmware:*:*:*:*:*:windows:*:* Versions before 1.4.82 Vulnerable ·EFM
- cpe:2.3:h:iptime:nas-iie:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·EFM
Remediation
- Fix · CNA ipTIME NAS product (NAS1, 2, 3, 4, 1dual, 2dual 4dual) (EFM Networks Co., Ltd) Fixed in 1.4.82
Timeline
- 2026-10-02 Threatist record created from CVE-2021-26620
- 2026-10-03 Alias added: GHSA-cc72-grgq-wvmx
References
More EFM Nas-i Firmware vulnerabilities
- TI-2020-06355 Unrestricted file upload in EFM ipTIME NAS CVSS 3.1HIGH 8.0
Sources
- CVE-2021-26620 · CVE Program
- CVE-2021-26620 · NVD
- FIRST EPSS
- GHSA-cc72-grgq-wvmx · GitHub Advisory Database · CC BY 4.0
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