Network-triggered service interruption via out-of-bounds write
Published Sep 22, 2026 · Updated Sep 22, 2026
Out-of-bounds write in Ubiquiti UniFi gateways allows remote attackers with network access to interrupt device service. Ubiquiti has not disclosed which network-facing service or protocol accepts the triggering input or which buffer write crosses its allocation. Exploitation requires network reachability and is reported only to cause denial of service, with no published confidentiality or integrity impact.
Summary
What happened
Out-of-bounds write in Ubiquiti UniFi gateways allows remote attackers with network access to interrupt device service. Ubiquiti has not disclosed which network-facing service or protocol accepts the triggering input or which buffer write crosses its allocation. Exploitation requires network reachability and is reported only to cause denial of service, with no published confidentiality or integrity impact.
The record
- CVE
- CVE-2026-95862
- Published
- Sep 22, 2026
- Updated
- Sep 22, 2026
- Vendor
- Ubiquiti
- Product
- Cloud Gateways
- Classifications
- CWE-787, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 22, 2026CVE publishedPublication date reported by the CVE source.
- Sep 22, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <5.1.31
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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