CVE-2026-27642 is a high-severity vulnerability affecting free5gc UDM versions up to and including 1.4.1. Remote attackers can inject control characters into the supi parameter, causing internal URL parsing errors that expose system-level error details and enable service fingerprinting. With a CVSS score of 7.5, this vulnerability is easily exploitable over the network with low attack complexity, potentially leading to high confidentiality impact. There is no evidence of active exploitation, public exploit code, or significant community discussion, and a patch is available in free5gc/udm pull request 75.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
<= 1.4.1CPE matchmatch criteria | cpe:2.3:a:free5gc:udm:*:*:*:*:*:go:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.
Remediation records are not available for this CVE.