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TI-2021-03289 Aliases CVE-2021-4433GHSA-22mf-f3cc-mh6f

Karjasoft Sami HTTP Server HTTP HEAD Rrequest denial of service

Priority HIGH 72CWE-404Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-404.

Summary

A vulnerability was found in Karjasoft Sami HTTP Server 2.0. It has been classified as problematic. Affected is an unknown function of the component HTTP HEAD Rrequest Handler. The manipulation leads to denial of service. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250836.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.01261 69th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
KarjasoftSami HTTP Server2.0—No fix listedCNA
  • Sami HTTP Server VendorKarjasoft Affected 2.0 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:karjasoft:sami_http_server:2.0:*:*:*:*:*:*:*2.0VulnerableKarjasoft
  • cpe:2.3:a:karjasoft:sami_http_server:2.0:*:*:*:*:*:*:* Versions 2.0 Vulnerable ·Karjasoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4433
  2. 2026-10-03 Alias added: GHSA-22mf-f3cc-mh6f

References

Exploit 1

  • TI-2004-00261 Buffer overflow in KarjaSoft Sami HTTP Server 1.0.4 allows remote attackers to cause a… CVSS 2.0HIGH 10.0
  • TI-2007-00535 KarjaSoft Sami HTTP Server 2.0.1 allows remote attackers to cause a denial of service… CVSS 2.0MEDIUM 5.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences