CVE-1999-0016, widely known as the "Land" attack, is a denial-of-service vulnerability affecting a broad range of legacy TCP/IP stack implementations from vendors including Cisco, Microsoft, HP, and Sun. This Medium severity issue (CVSS 5.0) enables a remote, unauthenticated attacker to cause a system crash or freeze by sending a spoofed TCP SYN packet with identical source and destination addresses. Although the vulnerability is currently inactive in the CISA KEV catalog and lacks recent media attention, multiple proof-of-concept exploits are publicly available, contributing to a significant EPSS score of approximately 0.80.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
7000CPE matchmatch criteria | cpe:2.3:o:cisco:ios:7000:*:*:*:*:*:*:* | ||
5.01CPE matchmatch criteria | cpe:2.3:a:gnu:inet:5.01:*:*:*:*:*:*:* | ||
2.0CPE matchmatch criteria | cpe:2.3:a:microsoft:winsock:2.0:*:*:*:*:*:*:* | ||
9.00CPE matchmatch criteria | cpe:2.3:o:hp:hp-ux:9.00:*:*:*:*:*:*:* | ||
9.01CPE matchmatch criteria | cpe:2.3:o:hp:hp-ux:9.01:*:*:*:*:*:*:* |
CVSS version used by this source: 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.