Servers and applications
CVE-2010-2951
dns_internal.cc in Squid 3.1.6, when IPv6 DNS resolution is not enabled, accesses an invalid socket during an IPv4 TCP DNS query, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via vectors that trigger an IPv4 DNS response with the TC bit set.
- Severity
- Medium 5.0
- Published
- 12 Oct 2010
- Last changed
- 16 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Exploit chance
- 31% in the next 30 daysHigher than 98% of CVEs. EPSS by FIRST, 12 Nov 2026
- Attack
- Over the network · No login needed
- Attacker can
- Slow it down
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
SquidServers and applications · cpe:a:squid-cache:squid |
|