A security vulnerability originally reported in the SYNC2101 product, and applicable to…
Priority LOW 37Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
A security vulnerability originally reported in the SYNC2101 product, and applicable to specific sub-families of SYNC devices, allows an attacker to download the configuration file used in the device and apply a modified configuration file back to the device. The attack requires network access to the SYNC device and knowledge of its IP address. The attack exploits the unsecured communication channel used between the administration tool Easyconnect and the SYNC device (in the affected family of SYNC products).
Why it matters now
EPSS 0.00947 61st percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 40
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:kalkitech:sync241-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync241-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync241-m2_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync241-m2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync241-m4_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync241-m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync261-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync261-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2000-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2000-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
- cpe:2.3:o:kalkitech:sync241-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync241-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync241-m2_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync241-m2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync241-m4_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync241-m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync261-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync261-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2000-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2000-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
Show 30 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:kalkitech:sync2000-m2_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2000-m2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2000-m4_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2000-m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2101-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2101-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2101-m2_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2101-m2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2101-m6_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2101-m6:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2101-m7_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2101-m7:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2101-m8_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2101-m8:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2111-m2_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2111-m2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync2111-m3_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync2111-m3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync3000-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync3000-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync3000-m2_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync3000-m2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync3000-m3_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync3000-m3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync3000-m4_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync3000-m4:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync3000-m12_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync3000-m12:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
| cpe:2.3:o:kalkitech:sync221-m1_firmware:*:*:*:*:*:*:*:* | up to 4.15.3 | Vulnerable | Kalkitech |
| cpe:2.3:h:kalkitech:sync221-m1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Kalkitech |
- cpe:2.3:o:kalkitech:sync2000-m2_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2000-m2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2000-m4_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2000-m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2101-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2101-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2101-m2_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2101-m2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2101-m6_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2101-m6:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2101-m7_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2101-m7:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2101-m8_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2101-m8:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2111-m2_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2111-m2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync2111-m3_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync2111-m3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync3000-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync3000-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync3000-m2_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync3000-m2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync3000-m3_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync3000-m3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync3000-m4_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync3000-m4:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync3000-m12_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync3000-m12:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
- cpe:2.3:o:kalkitech:sync221-m1_firmware:*:*:*:*:*:*:*:* Versions up to 4.15.3 Vulnerable ·Kalkitech
- cpe:2.3:h:kalkitech:sync221-m1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Kalkitech
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-44564
- 2026-10-03 Alias added: GHSA-q2pf-f9qr-87mv
References
Sources
- CVE-2021-44564 · CVE Program
- CVE-2021-44564 · NVD
- FIRST EPSS
- GHSA-q2pf-f9qr-87mv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences