What is 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 manipulated to obtain sensitive information.
The record classifies CVE-2026-34911 under weakness class CWE-22. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs low-privilege credentials, needs no user interaction, and has high impact on confidentiality. 10 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 159 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 7.7 — HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N - EPSS (FIRST)
- 0.5% probability of exploitation in the next 30 days, higher than 46.6% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 5.7/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-05-22
Is CVE-2026-34911 being exploited?
It currently carries a trending score of 17 in the Threadlinqs vulnerability feed.
Affected products and versions
- Ubiquiti Inc: UniFi OS Server, UDM, UDM-Pro, UDM-SE, UDM-Pro-Max, UDM-Beast, EFG, UDW, UDR, UDR7
How to fix CVE-2026-34911
No vendor patch reference has been recorded for CVE-2026-34911 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-34911
1 tracked threat in the Threadlinqs corpus references CVE-2026-34911, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on .