CVE-2025-27909 is a critical cross-origin resource sharing (CORS) vulnerability affecting IBM Concert Software versions 1.0.0 through 1.1.0. The flaw allows an attacker to perform privileged actions due to insufficient domain name validation within the CORS configuration. With a CVSS score of 9.8 (Critical), this vulnerability presents a high risk, allowing unauthenticated attackers to achieve complete compromise of confidentiality, integrity, and availability over the network with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.0.0, < 2.0.0CPE matchmatch criteria | cpe:2.3:a:ibm:concert:*:*:*:*:*:*:*:* | ||
>= 1.0.0, <= 1.1.0CPE match | cpe:2.3:a:ibm:concert_software:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
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.
Remediation records are not available for this CVE.