VulnerabilityModified

CVE-2021-25909

ZIV Automation 4CCT-EA6-334126BF firmware version 3.23.80.27.36371, allows an unauthenticated, remote attacker to cause a denial of service condition on the device.

HIGH 7.5EPSS 1.30%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.30%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

ZIV Automation 4CCT-EA6-334126BF firmware version 3.23.80.27.36371, allows an unauthenticated, remote attacker to cause a denial of service condition on the device. An attacker could exploit this vulnerability by sending specific packets to the port 7919.

CVSS 3.1: 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS: 1.30% probability · 69th percentile
CISA KEV: Not listed
Weakness: CWE-400
Affected: zivautomation/4cct-ea6-334126bf firmware
Source: cve-coordination@incibe.es

References

https://www.incibe-cert.es/en/early-warning/ics-advisories/4cct-vulnerable-denial-service-attackThird Party Advisory
https://www.incibe-cert.es/en/early-warning/ics-advisories/4cct-vulnerable-denial-service-attackThird Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.