wrshdsp.exe in Denicomp Winsock RSHD/NT 2.21.00 and earlier allows remote attackers to cause a denial of service (CPU consumption) via (1) in 2.20.00 and earlier, an invalid port number such as a negative number, which causes a connection attempt to that port and all ports below 1024, and (2) in 2.21.00, a port number of 1024.
Fix
Public exploits 2
- Denicomp Winsock RSHD/NT Standard Error 2.20.00 - Denial of Service (dos · windows) Exploit-DB · verified · 2001-12-10
- Denicomp Winsock RSHD/NT Standard Error 2.21.00 - Denial of Service (dos · windows) Exploit-DB · verified · 2001-12-10
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 4
- http://www.iss.net/security_center/static/7694.php Vendor Advisory
- http://www.securityfocus.com/bid/3659 Exploit, Vendor Advisory
- http://www.iss.net/security_center/static/7694.php Vendor Advisory
- http://www.securityfocus.com/bid/3659 Exploit, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 5.0 · denicompNVD modified 2026-10-09 19:16
Affected (CPE criteria) 2
cpe:2.3:a:denicomp:winsock_rshd_nt:2.20:*:*:*:*:*:*:*cpe:2.3:a:denicomp:winsock_rshd_nt:2.21:*:*:*:*:*:*:*
References 10
- http://online.securityfocus.com/archive/1/245405 Exploit
- http://www.denicomp.com/rshdnt.htm
- http://www.iss.net/security_center/static/7694.php Vendor Advisory
- http://www.securityfocus.com/archive/1/244580 Exploit
- http://www.securityfocus.com/bid/3659 Exploit, Vendor Advisory
- http://online.securityfocus.com/archive/1/245405 Exploit
- http://www.denicomp.com/rshdnt.htm
- http://www.iss.net/security_center/static/7694.php Vendor Advisory
- http://www.securityfocus.com/archive/1/244580 Exploit
- http://www.securityfocus.com/bid/3659 Exploit, Vendor Advisory