CVE-1999-1228
Various modems that do not implement a guard time, or are configured with a guard time of 0, can...
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 likelihood
What each source reports
NVD Score used
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.
- Record
CVE-1999-1228- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-1999-1228- Updated
- 2026-11-02
EUVDEUVD-1999-1209 No score
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.
- Record
EUVD-1999-1209- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-xqv9-mm7j-xwfh No score
Various modems that do not implement a guard time, or are configured with a guard time of 0, can...
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.
- Record
GHSA-xqv9-mm7j-xwfh- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-1999-1228 is a high vulnerability (CVSS 7.5) in Diamond Supra, published September 27, 1998. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.91%, the 79th percentile. No source names a fixed version.