SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-1999-1559

Xylan OmniSwitch before 3.2.6 allows remote attackers to bypass the login prompt via a CTRL-D (control d) character, which locks other users out of the switch because it only supports one session at a time.

MEDIUM 5.0EPSS 1.65%

Does this matter?

Lower severity and a low EPSS score (1.65%). Track it; it rarely justifies an emergency change on its own.

Description

Xylan OmniSwitch before 3.2.6 allows remote attackers to bypass the login prompt via a CTRL-D (control d) character, which locks other users out of the switch because it only supports one session at a time.

CVSS 2.0
5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
EPSS
1.65% probability · 76th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
alcatel/omniswitch
Source
cve@mitre.org
EPSS trend
0%3%5%26 October 2026: 1.65%26 October 202626 October 2026

EPSS 1.7% 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.