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01 Record

CVE-2026-34911

A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be

HighPUBLISHEDCNA: hackerone
CNA base score7.7 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

02 Description

A malicious actor with access to the network and low privileges could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.68% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 52.1% of scored records. A rank, not a probability.
NVD base score
7.7 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-07-23.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-05-22 00:43Z5 MO AGO
Last updated
2026-05-22 12:37Z5 MO AGO
Reserved
2026-03-31
Assigning CNA
hackerone
Record state
PUBLISHED
Severity
High (CVSS 7.7)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
  • CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')Base
Data version
5.2
Document digest
3c1a22b60491c0f3b45f4ccdce849922f5239683805f7815a742854df4e34482

05 Affected products

VendorProductVersionsPlatforms
Ubiquiti IncUniFi OS Server0 to < 5.0.8—
Ubiquiti IncUDM0 to < 5.1.12—
Ubiquiti IncUDM-Pro0 to < 5.1.12—
Ubiquiti IncUDM-SE0 to < 5.1.12—
Ubiquiti IncUDM-Pro-Max0 to < 5.1.12—
Ubiquiti IncUDM-Beast0 to < 5.1.11—
Ubiquiti IncEFG0 to < 5.1.12—
Ubiquiti IncUDW0 to < 5.1.12—
Ubiquiti IncUDR0 to < 5.1.12—
Ubiquiti IncUDR70 to < 5.1.12—
Ubiquiti IncUDR-5G0 to < 5.1.12—
Ubiquiti IncExpress 70 to < 5.1.12—
Ubiquiti IncUNVR0 to < 5.1.12—
Ubiquiti IncUNVR-Pro0 to < 5.1.12—
Ubiquiti IncUNVR-Instant0 to < 5.1.12—
Ubiquiti IncUNVR-G20 to < 5.1.12—
Ubiquiti IncUNVR-G2-Pro0 to < 5.1.12—
Ubiquiti IncENVR0 to < 5.1.12—
Ubiquiti IncENVR-Core0 to < 5.1.12—
Ubiquiti IncUNAS-20 to < 5.1.10—
Ubiquiti IncUNAS-40 to < 5.1.10—
Ubiquiti IncUNAS-Pro0 to < 5.1.10—
Ubiquiti IncUNAS-Pro-40 to < 5.1.10—
Ubiquiti IncUNAS-Pro-80 to < 5.1.10—
Ubiquiti IncUCKP0 to < 5.1.12—
Ubiquiti IncUCK0 to < 5.1.12—
Ubiquiti IncUCK-Enterprise0 to < 5.1.12—
Ubiquiti IncUCG-Ultra0 to < 5.1.12—
Ubiquiti IncUCG-Max0 to < 5.1.12—
Ubiquiti IncUCG-Fiber0 to < 5.1.12—
Ubiquiti IncUCG-Industrial0 to < 5.1.12—

06 References