Improper signature verification in homeLYnk and spaceLYnk V2.60 and prior
Priority LOW 34CWE-347Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-347.
Summary
Improper Verification of Cryptographic Signature vulnerability exists in homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior which could cause remote code execution when an attacker loads unauthorized code.
Why it matters now
EPSS 0.01 63rd 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 |
|---|---|---|---|---|---|
| — | homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior | homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior | — | No fix listed | CNA |
- homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior Vendor— Affected homeLYnk (Wiser For KNX) and spaceLYnk V2.60 and prior Fixed in — No fix listed CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:schneider-electric:spacelynk_firmware:*:*:*:*:*:*:*:* | up to 2.6.0 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:spacelynk:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
| cpe:2.3:o:schneider-electric:homelynk_firmware:*:*:*:*:*:*:*:* | up to 2.6.0 | Vulnerable | Schneider Electric |
| cpe:2.3:h:schneider-electric:homelynk:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Schneider Electric |
- cpe:2.3:o:schneider-electric:spacelynk_firmware:*:*:*:*:*:*:*:* Versions up to 2.6.0 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:spacelynk:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
- cpe:2.3:o:schneider-electric:homelynk_firmware:*:*:*:*:*:*:*:* Versions up to 2.6.0 Vulnerable ·Schneider Electric
- cpe:2.3:h:schneider-electric:homelynk:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Schneider Electric
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-22734
- 2026-10-03 Alias added: GHSA-hxjr-hwrw-hrv5
References
More Schneider Electric Homelynk Firmware vulnerabilities
- TI-2021-05618 Missing brute-force protection in homeLYnk and spaceLYnk V2.60 and prior CVSS 3.1CRITICAL 9.8
- TI-2021-05619 Broken or risky cryptographic algorithm in homeLYnk and spaceLYnk V2.60 and prior CVSS 3.1CRITICAL 9.8
- TI-2018-05621 In Schneider Electric Wiser for KNX V2.1.0 and prior, homeLYnk V2.0.1 and prior; and… CVSS 3.0HIGH 7.5
- TI-2021-05617 Path traversal in homeLYnk and spaceLYnk V2.60 and prior CVSS 3.1HIGH 7.5
- TI-2021-05616 Improper signature verification in homeLYnk and spaceLYnk V2.60 and prior CVSS 3.1HIGH 7.2
- TI-2021-05613 Improper privilege management in homeLYnk and spaceLYnk V2.60 and prior CVSS 3.1HIGH 7.8
Sources
- CVE-2021-22734 · CVE Program
- CVE-2021-22734 · NVD
- FIRST EPSS
- GHSA-hxjr-hwrw-hrv5 · GitHub Advisory Database · CC BY 4.0
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