CVE-2026-77549
UniFi OS CRLF Injection Authentication Bypass
Description
A malicious actor with access to the network and under certain conditions could exploit an Improper Neutralization of CRLF Sequences vulnerability found in certain devices running UniFi OS to bypass authentication to such UniFi OS devices or instances.
INFO
Published Date :
Aug. 26, 2026, 10:30 a.m.
Last Modified :
Aug. 26, 2026, 10:30 a.m.
Remotely Exploit :
Yes !
Source :
Ubiquiti
Affected Products
The following products are affected by CVE-2026-77549
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | CRITICAL | fe490ce8-0395-4072-90d8-2707e1bdf984 | ||||
| CVSS 3.1 | CRITICAL | MITRE-CVE |
Solution
- Update UniFi OS to the latest secure version.
- Apply vendor-provided security patches immediately.
- Restrict network access to UniFi OS devices.
- Monitor network traffic for suspicious activity.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-77549 vulnerability anywhere in the article.