CVE-1999-1228

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 1998-09-27 · updated 2026-06-16

Description

Various modems that do not implement a guard time, or are configured with a guard time of 0, can allow remote attackers to execute arbitrary modem commands such as ATH, ATH0, etc., via a "+++" sequence that appears in ICMP packets, the subject of an e-mail message, IRC commands, and others.

Affected products

Diamond Supra: 33.6, v.90
Logicode Quicktel: 28.8
Us Robotics: 33.6

References

http://marc.info/?l=bugtraq&m=90695973308453&w=2
http://www.macintouch.com/modemsecurity.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/3320
http://marc.info/?l=bugtraq&m=90695973308453&w=2
http://www.macintouch.com/modemsecurity.html
https://exchange.xforce.ibmcloud.com/vulnerabilities/3320

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