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CVE-2019-1839

21
FAUCET Score

CVE-2019-1839 is a critical vulnerability in Cisco Remote PHY Device Software affecting various CBR-8 and Remote PHY models. It allows an authenticated, local attacker with administrator access to execute arbitrary commands with root privileges due to improper input sanitization in CLI commands. The vulnerability has a CVSS score of 6.7 (Medium) and could lead to complete system compromise. There is no known active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 6.4CPE matchmatch criteria
cpe:2.3:o:cisco:remote_phy_120_firmware:*:*:*:*:*:*:*:*
< 3.1CPE matchmatch criteria
cpe:2.3:o:cisco:remote_phy_220_firmware:*:*:*:*:*:*:*:*
< 1.2CPE matchmatch criteria
cpe:2.3:o:cisco:remote_phy_shelf_7200_firmware:*:*:*:*:*:*:*:*
1.1CPE matchmatch criteria
cpe:2.3:o:cisco:cbr-8_firmware:1.1:*:*:*:*:*:*:*
6.1CPE matchmatch criteria
cpe:2.3:o:cisco:cbr-8_firmware:6.1:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.7MEDIUM

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
36.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 86th percentile among its peer group of 3,720 CVEs.

Social Chatter

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

Vendor Patches (1)

ciscovendor investigatingvia nvd_reference
View patch

References

tools.cisco.com / security/center/content/CiscoSecurityAdvisory/cisco-sa-20190821-rphy
Vendor Advisory