PatchTheCVECVE-2026-77554: A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in
CVE-2026-77554 is a critical-severity flaw (CVSS 10.0) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi Talk Application to execute a Command Injection on the host device.
Why this priority
- Critical severity
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 10.0 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 1.6% (top 24%) |
| CISA exploited list | No |
| Weakness | CWE-20 |
| Published | 2026-08-26 |
| Last modified | 2026-08-28 |
Last updated 2026-08-28 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-77554?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-77554 being exploited?
CVE-2026-77554 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-77554 affect?
CVE-2026-77554 affects affected software. Severity is critical (CVSS 10.0). A malicious actor with access to the network could exploit an Improper Input Validation vulnerability found in UniFi Talk Application to execute a Command Injection on the host device.
How urgent is CVE-2026-77554?
Priority 62/100. Critical severity; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action