CVE-2016-6296 is an integer signedness error in the simplestring_addn function within xmlrpc-epi, affecting PHP versions before 5.5.38, 5.6.24, and 7.0.9. This flaw allows remote attackers to trigger a heap-based buffer overflow, leading to a denial of service or potentially other unspecified impacts, by providing a long argument to the xmlrpc_encode_request function. With a CVSS score of 9.8 (Critical), this vulnerability is easily exploitable over the network with low attack complexity and no user interaction, posing a high risk to confidentiality, integrity, and availability. Despite its critical severity, there is no evidence of active exploitation, no known public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.5.37CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
5.6.0CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.0:alpha1:*:*:*:*:*:* | ||
5.6.0CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.0:alpha2:*:*:*:*:*:* | ||
5.6.0CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.0:alpha3:*:*:*:*:*:* | ||
5.6.0CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.0:alpha4:*:*:*:*:*:* |
CVSS version used by this source: 3.0
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
No social media mentions found for this CVE.
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.