SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2019-9917

ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.

MEDIUM 6.5EPSS 3.08%

Does this matter?

Lower severity and a low EPSS score (3.08%). Track it; it rarely justifies an emergency change on its own.

Description

ZNC before 1.7.3-rc1 allows an existing remote user to cause a Denial of Service (crash) via invalid encoding.

CVSS 3.0
6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS
3.08% probability · 88th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-20
Affected
znc/znc · canonical/ubuntu linux · fedoraproject/fedora
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 3.08%26 October 202626 October 2026

EPSS 3.1% 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.