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UK Cyber Defence
VulnerabilityModified

CVE-2019-1923

A vulnerability in Cisco Small Business SPA500 Series IP Phones could allow a physically proximate attacker to execute arbitrary commands on the device.

MEDIUM 6.6EPSS 0.48%

Does this matter?

Lower severity and a low EPSS score (0.48%). Track it; it rarely justifies an emergency change on its own.

Description

A vulnerability in Cisco Small Business SPA500 Series IP Phones could allow a physically proximate attacker to execute arbitrary commands on the device. The vulnerability is due to improper input validation in the device configuration interface. An attacker could exploit this vulnerability by accessing the configuration interface, which may require a password, and then accessing the device's physical interface and inserting a USB storage device. A successful exploit could allow the attacker to execute arbitrary commands on the device in an elevated security context. At the time of publication, this vulnerability affected Cisco Small Business SPA500 Series IP Phones firmware releases 7.6.2SR5 and prior.

CVSS 3.1
6.6 MEDIUMCVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
0.48% probability · 41th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-77, CWE-20
Affected
cisco/spa501g firmware · cisco/spa502g firmware · cisco/spa504g firmware · cisco/spa508g firmware · cisco/spa509g firmware · cisco/spa512g firmware · cisco/spa514g firmware · cisco/spa525g2 firmware · cisco/spa500s firmware · cisco/spa500ds firmware
Source
psirt@cisco.com
EPSS trend
0%3%5%26 October 2026: 0.48%26 October 202626 October 2026

EPSS 0.5% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.