CVE-2001-1244 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 22% (pctl 98)
Patch early
A public exploit exists.
Description
Multiple TCP implementations could allow remote attackers to cause a denial of service (bandwidth and CPU exhaustion) by setting the maximum segment size (MSS) to a very small number and requesting large amounts of data, which generates more packets with less TCP-level data that amplify network traffic and consume more server CPU to process.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 21.97% — more likely to be exploited than 98% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2001-07-07 |
| Last modified | 2026-06-16 |
Affected (9)
| Vendor | Product |
|---|---|
| freebsd | freebsd |
| hp | hp-ux |
| hp | vvos |
| linux | linux kernel |
| microsoft | windows 2000 |
| microsoft | windows nt |
| netbsd | netbsd |
| openbsd | openbsd |
| sun | sunos |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | HP-UX 11 / Linux Kernel 2.4 / Windows 2000/NT 4.0 / IRIX 6.5 - Small TCP MSS Denial of Service | 2001-07-07 |
References
→ the Explorer · watch your stack · NVD