High severity · published Jan 6, 2026
CVE-2020-36907
Extreme Networks Aerohive HiveOS <=11.x 11.x Unauthenticated Remote Denial of Service
7.5
CVSS
0.5%
EPSS
No
On KEV
Description
Aerohive HiveOS contains a denial of service vulnerability in the NetConfig UI that allows unauthenticated attackers to render the web interface unusable. Attackers can send a crafted HTTP request to the action.php5 script with specific parameters to trigger a 5-minute service disruption.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AH
Aerohive HiveOS · Extreme Networks
<=11.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-36907
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-36907
advisories.ncsc.nl
https://advisories.ncsc.nl/2020/ncsc-2020-0367.html
community.extremenetworks.com
https://community.extremenetworks.com/t5/iq-engine-hive-os-announcements/bg-p/IQ_Engine_Hive_OS_Announcements
exchange.xforce.ibmcloud.com
https://exchange.xforce.ibmcloud.com/vulnerabilities/181649
packetstorm.news
https://packetstorm.news/files/id/157587
www.exploit-db.com
https://www.exploit-db.com/exploits/48441
www.extremenetworks.com
https://www.extremenetworks.com