CVE-2020-12760 is a critical deserialization vulnerability affecting OpenNMS Horizon before 26.0.1 and OpenNMS Meridian before 2018.1.19 and 2019.1.7. This flaw allows authenticated users, regardless of their assigned permissions, to achieve remote code execution through arbitrary deserialization of Java objects via the ActiveMQ channel configuration. With a CVSS score of 8.8 (High), it presents a significant risk due to its low attack complexity and high impact on confidentiality, integrity, and availability. There is currently no public exploit intelligence, such as Metasploit modules or ExploitDB entries, and it has not been added to CISA's KEV catalog. Community discussion and media coverage for this CVE are minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 26.1.0CPE matchmatch criteria | cpe:2.3:a:opennms:opennms_horizon:*:*:*:*:*:*:*:* | ||
< 2018.1.19CPE matchmatch criteria | cpe:2.3:a:opennms:opennms_meridian:*:*:*:*:*:*:*:* | ||
>= 2019, < 2019.1.7CPE matchmatch criteria | cpe:2.3:a:opennms:opennms_meridian:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/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, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 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.