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Fencer Vulns
critical 9.8

CVE-1999-0426 in the critical feed json

The default permissions of /dev/kmem in Linux versions before 2.0.36 allows IP spoofing.

published 1999-03-01 27 y ago modified 2026-06-16 4 mo ago also EUVD-1999-0426

cvss
9.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
10.8%
EPSS 10.8% chance of exploitation in 30 days, percentile 95%
public exploits
1
Exploit-DB

Summary

The default permissions of /dev/kmem in Linux versions before 2.0.36 allows IP spoofing.

Timeline

  1. Published
  2. First public exploit (EDB-19458)

Exploit prediction

10.76% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • EDB-19458 Linux Kernel 2.0.30/2.0.35/2.0.36/2.0.37 - Blind TCP Spoofing remote, 1999-07-31

CVSS scores

assigned by version score vector
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Classification

Weakness
  • CWE-276 Incorrect Default Permissions

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.