CVE-2016-8858 describes a denial-of-service vulnerability in OpenSSH versions 6.x and 7.x through 7.3. Attackers can exploit this by sending numerous duplicate KEXINIT requests, leading to excessive memory consumption. This high-severity vulnerability (CVSS 7.5) is easily exploitable over the network with low attack complexity, potentially causing service disruption. Despite its severity, OpenSSH upstream does not consider it a security issue, and there is no known active exploitation, publicly available exploit code, or significant community discussion beyond a single mention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
6.8CPE matchmatch criteria | cpe:2.3:a:openbsd:openssh:6.8:*:*:*:*:*:*:* | ||
6.9CPE matchmatch criteria | cpe:2.3:a:openbsd:openssh:6.9:*:*:*:*:*:*:* | ||
7.0CPE matchmatch criteria | cpe:2.3:a:openbsd:openssh:7.0:*:*:*:*:*:*:* | ||
7.1CPE matchmatch criteria | cpe:2.3:a:openbsd:openssh:7.1:*:*:*:*:*:*:* | ||
7.2CPE matchmatch criteria | cpe:2.3:a:openbsd:openssh:7.2:*:*:*:*:*:*:* |
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.