UpHeron
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Servers and applications

CVE-1999-1199

Apache WWW server 1.3.1 and earlier allows remote attackers to cause a denial of service (resource exhaustion) via a large number of MIME headers with the same name, aka the "sioux" vulnerability.

Severity
High 10.0
Published
7 Aug 1998
Last changed
16 Jun 2026
Added to UpHeron
17 Oct 2026
Exploit chance
7.6% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Read data · Change data · Take it down
CVSS vector
AV:N/AC:L/Au:N/C:C/I:C/A:C
Sources
NVD

Affected software

SoftwareAffected versions
Apache HTTP ServerServers and applications · cpe:a:apache:http_server
  • Every version up to 1.3.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-1999-1199
  • CVE.org https://www.cve.org/CVERecord?id=CVE-1999-1199