CVE-1999-1228 json
Various modems that do not implement a guard time, or are configured with a guard time of 0, can allow remote attackers to execute arbitrar…
published 1998-09-27 28 y ago modified 2026-06-16 4 mo ago also EUVD-1999-1209
- cvss
- 7.5
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.9%
- EPSS 1.9% chance of exploitation in 30 days, percentile 79%
- public exploits
- 0
- none known
Summary
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.
Exploit prediction
1.91% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 7.5 | AV:N/AC:L/Au:N/C:P/I:P/A:P |
References
-
macintouch.com
/modemsecurity.html
vendor-advisory
-
exchange.xforce.ibmcloud.com
/vulnerabilities/3320
vdb-entry
-
marc.info
/?l=bugtraq&m=90695973308453&w=2
mailing-list
Sources
- CVE List CVE-1999-1228
- NVD CVE-1999-1228
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