Cisco Remote PHY Device Software Command Injection Vulnerability
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
A vulnerability in Cisco Remote PHY Device Software could allow an authenticated, local attacker to execute commands on the underlying Linux shell of an affected device with root privileges. The vulnerability occurs because the affected software improperly sanitizes user-supplied input. An attacker who has valid administrator access to an affected device could exploit this vulnerability by supplying various CLI commands with crafted arguments. A successful exploit could allow the attacker to run arbitrary commands as the root user, allowing complete compromise of the system.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Cisco | Cisco Remote PHY | before 6.4 | 6.4 | Patch available | CNA |
- Cisco Remote PHY VendorCisco Affected before 6.4 Fixed in 6.4 Patch available CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:remote_phy_120_firmware:*:*:*:*:*:*:*:* | before 6.4 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:remote_phy_120:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:remote_phy_220_firmware:*:*:*:*:*:*:*:* | before 3.1 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:remote_phy_220:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:remote_phy_shelf_7200_firmware:*:*:*:*:*:*:*:* | before 1.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:remote_phy_shelf_7200:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:o:cisco:cbr-8_firmware:1.1:*:*:*:*:*:*:* | 1.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:cbr-8_firmware:6.1:*:*:*:*:*:*:* | 6.1 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:cbr-8_firmware:6.2:*:*:*:*:*:*:* | 6.2 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:cbr-8:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:remote_phy_120_firmware:*:*:*:*:*:*:*:* Versions before 6.4 Vulnerable ·Cisco
- cpe:2.3:h:cisco:remote_phy_120:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:remote_phy_220_firmware:*:*:*:*:*:*:*:* Versions before 3.1 Vulnerable ·Cisco
- cpe:2.3:h:cisco:remote_phy_220:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:remote_phy_shelf_7200_firmware:*:*:*:*:*:*:*:* Versions before 1.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:remote_phy_shelf_7200:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:o:cisco:cbr-8_firmware:1.1:*:*:*:*:*:*:* Versions 1.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:cbr-8_firmware:6.1:*:*:*:*:*:*:* Versions 6.1 Vulnerable ·Cisco
- cpe:2.3:o:cisco:cbr-8_firmware:6.2:*:*:*:*:*:*:* Versions 6.2 Vulnerable ·Cisco
- cpe:2.3:h:cisco:cbr-8:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
- Fix · CNA Cisco Remote PHY (Cisco) Fixed in 6.4
Timeline
- 2026-10-02 Threatist record created from CVE-2019-1839
- 2026-10-03 Alias added: GHSA-6hf6-gmp8-5xw9
References
Sources
- CVE-2019-1839 · CVE Program
- CVE-2019-1839 · NVD
- FIRST EPSS
- GHSA-6hf6-gmp8-5xw9 · 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