CVE Catalog

CVE-1999-1228

High
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

High risk
1.93%

77th percentile - higher than 77% of all known CVEs

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 via a '+++' sequence in ICMP packets, the subject of an e-mail message, IRC commands, and others.

Risk Assessment

Organizations may be exposed to unauthorized execution of modem commands, potentially leading to loss of control over devices and security incidents.

Recommendation

It is recommended to configure modems with an appropriate guard time and to monitor network traffic for suspicious sequences.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS