CVE-2021-28166 affects Eclipse Mosquitto versions 2.0.0 to 2.0.9, where a NULL pointer dereference can be triggered by an authenticated MQTT v5 client sending a crafted CONNACK message to the broker. This vulnerability has a CVSS score of 6.5 (Medium), indicating it can be exploited remotely with low complexity by an authenticated attacker, leading to high availability impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 2.0.9CPE match | cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* | ||
>= 2.0.0, <= 2.0.9CPE matchmatch criteria | cpe:2.3:a:eclipse:mosquitto:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/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, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.