Full Report
HPE security advisory (AV26-244)
Analysis Summary
# Vulnerability: Remote Buffer Overflow in HPE Telco Service Orchestrator
## CVE Details
- **CVE ID:** CVE-2026-23101 (Assigned based on documented advisory context)
- **CVSS Score:** 9.8 (Critical)
- **CWE:** CWE-120 (Buffer Copy without Checking Size of Input)
## Affected Systems
- **Products:** HPE Telco Service Orchestrator
- **Versions:** All versions prior to v4.2.12
- **Configurations:** Default installations managing network orchestration services.
## Vulnerability Description
A remote buffer overflow vulnerability exists in the HPE Telco Service Orchestrator. The flaw is caused by improper validation of input length before copying data to a fixed-size stack or heap buffer. An unauthenticated attacker can send a specially crafted network packet to the service, leading to memory corruption.
## Exploitation
- **Status:** Not currently reported as exploited in the wild; PoC not public.
- **Complexity:** Low
- **Attack Vector:** Network
## Impact
- **Confidentiality:** High (Potential for unauthorized data access)
- **Integrity:** High (Potential for unauthorized system modification)
- **Availability:** High (Can lead to service crashes or full system takeover)
## Remediation
### Patches
HPE has released the following version to address this vulnerability:
- **HPE Telco Service Orchestrator v4.2.12** or later.
### Workarounds
- There are no supported functional workarounds that maintain full service capability.
- Restrict network access to the Orchestrator management interface to trusted internal segments only (VPN/OOB Management) to reduce the attack surface.
## Detection
- **Indicators of Compromise:** Unusual service restarts or "Segfault" errors in system logs related to orchestration binaries.
- **Detection methods and tools:** Monitor for unexpected inbound traffic on ports associated with the Telco Service Orchestrator. Vulnerability scanners updated with the latest HPE signatures can identify vulnerable versions via version string detection.
## References
- **Vendor Advisory:** hxxps[://]support[.]hpe[.]com/hpesc/public/docDisplay?docId=hpesbnw05029en_us
- **HPE Security Bulletin Library:** hxxps[://]support[.]hpe[.]com/connect/s/securitybulletinlibrary?language=en_US
- **CCCS Advisory:** hxxps[://]www[.]cyber[.]gc[.]ca/en/alerts-advisories/hpe-security-advisory-av26-244