High severity · published Oct 15, 2026
CVE-2026-76663
HPE NonStop TELSERV - Memory corruption vulnerability
7.5
CVSS
0.3%
EPSS
No
On KEV
Description
A stack-based buffer overflow vulnerability in HPE NonStop TELSERV can cause memory corruption that may result in DoS.
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)0.3% · higher than 19% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HN
HPE NonStop TELSERV · Hewlett Packard Enterprise
T9553L01^BAJ and earlier · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-76663
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-76663
support.hpe.com
https://support.hpe.com/hpesc/public/docDisplay?docId=hpesbns05148en_us&docLocale=en_US
More from HPE NonStop TELSERV
5.9
CVE-2026-76662
HPE NonStop TELSERV - Memory corruption vulnerability