SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-1999-0598

A network intrusion detection system (IDS) does not properly handle packets that are sent out of order, allowing an attacker to escape detection.

HIGH 10.0EPSS 1.89%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (1.89%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

Description

A network intrusion detection system (IDS) does not properly handle packets that are sent out of order, allowing an attacker to escape detection.

CVSS 2.0
10.0 HIGHAV:N/AC:L/Au:N/C:C/I:C/A:C
EPSS
1.89% probability · 79th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.89%26 October 202626 October 2026

EPSS 1.9% 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.

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