CVE-2016-4556 describes a double free vulnerability in Squid versions 3.x before 3.5.18 and 4.x before 4.0.10, allowing remote servers to trigger a denial of service (crash) through specially crafted Edge Side Includes (ESI) responses. This vulnerability carries a CVSSv3 score of 7.5 (HIGH), indicating it can be exploited remotely with low complexity to achieve high availability impact. While the FAUCET Risk Score is high at 97/100 and its EPSS score is above average, there is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.0CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.0:*:*:*:*:*:*:* | ||
3.1CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.1:*:*:*:*:*:*:* | ||
3.1.0.1CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.1.0.1:*:*:*:*:*:*:* | ||
3.1.0.2CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.1.0.2:*:*:*:*:*:*:* | ||
3.1.0.3CPE matchmatch criteria | cpe:2.3:a:squid-cache:squid:3.1.0.3:*:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.