CVE-2016-4539 is a critical denial-of-service vulnerability affecting PHP versions before 5.5.35, 5.6.21, and 7.0.6, as well as various Fedora and openSUSE distributions. It allows remote attackers to trigger a buffer under-read and segmentation fault by providing crafted XML data to the xml_parse_into_struct function. With a CVSS score of 9.8, this vulnerability is easily exploitable over the network with no user interaction, potentially leading to a complete system compromise (C, I, A: High). While there is no evidence of active exploitation or publicly available exploit code in Metasploit, Nuclei, or ExploitDB, the vulnerability has garnered significant community discussion, indicating awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 5.5.34CPE matchmatch criteria | cpe:2.3:a:php:php:*:*:*:*:*:*:*:* | ||
5.6.0CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.0:*:*:*:*:*:*:* | ||
5.6.1CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.1:*:*:*:*:*:*:* | ||
5.6.2CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.2:*:*:*:*:*:*:* | ||
5.6.3CPE matchmatch criteria | cpe:2.3:a:php:php:5.6.3:*:*:*:*:*:*:* |
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
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.