VDB
CVE-2026-33191
CVE-2026-33191
PUBLISHED
CVSS 8.699999809265137 HIGH
free5GC UDM vulnerable to null byte injection in URL path parameters causing 500 Internal Server Error
EPSS 0.20% · 42.6th percentile
Risk Scores
CVSS 4.0
8.699999809265137
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS Score
0.20%
42.6th percentile
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| free5gc | free5gc | < 1.4.2, < 1.4.2 |
| free5gc | udm | 0, 0 |
| github.com | free5gc/udm | 0, 0 |
Exploit Intelligence
- CIRCL seen: CVE-2026-33191 (circl-sighting)
- CIRCL seen: CVE-2026-33191 (circl-sighting)
- https://github.com/free5gc/free5gc/security/advisories/GHSA-p9hg-pq3q-v9gv (circl)
- https://github.com/free5gc/udm/commit/88de9fa74a1b3f3522e53b4cfa2d184712ffa4ee (circl)
- GO-2026-4763.json (github-poc)
- GO-2026-4763.json (github-poc)
- GO-2026-4763.json (github-poc)
- GO-2026-4763.json (github-poc)
- GO-2026-4763.json (github-poc)
- GO-2026-4763.json (github-poc)
Timeline
- Mar 18, 2026 CVE Published
- Mar 19, 2026 Security Advisory
- Mar 20, 2026 CVE Updated
- Mar 20, 2026 EPSS Score
- Mar 20, 2026 PoC Published
- Mar 20, 2026 PoC Published
- Mar 21, 2026 EPSS Score
- Mar 22, 2026 EPSS Score
- Mar 23, 2026 EPSS Score
- Mar 24, 2026 EPSS Score
- Mar 25, 2026 EPSS Score
- May 18, 2026 EPSS Score