What’s Vulnerable › Vulnerabilities

CVE-2023-25187

• Severity: high (CVSS 7.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-06-16 · updated 2026-06-17
• Weakness: CWE-798

Description

An issue was discovered on NOKIA Airscale ASIKA Single RAN devices before 21B. Nokia Single RAN commissioning procedures do not change (factory-time installed) default SSH public/private key values that are specific to a network operator. As a result, the CSP internal BTS network SSH server (disabled by default) continues to apply the default SSH public/private key values. These keys don't give access to BTS, because service user authentication is username/password-based on top of SSH. Nokia factory installed default SSH keys are meant to be changed from operator-specific values during the BTS deployment commissioning phase. However, before the 21B release, BTS commissioning manuals did not provide instructions to change default SSH keys (to BTS operator-specific values). This leads to a possibility for malicious operations staff (inside a CSP network) to attempt MITM exploitation of BTS service user access, during the moments that SSH is enabled for Nokia service personnel to perform troubleshooting activities.

Affected products

• Nokia Asika Airscale Firmware: 19b, 20a, 20b, 20c, 21a

References

• http://packetstormsecurity.com/files/173055/Nokia-ASIKA-7.13.52-Private-Key-Disclosure.html
• https://Nokia.com
• https://www.nokia.com/about-us/security-and-privacy/product-security-advisory/cve-2023-25187/
• http://packetstormsecurity.com/files/173055/Nokia-ASIKA-7.13.52-Private-Key-Disclosure.html
• https://Nokia.com
• https://www.nokia.com/about-us/security-and-privacy/product-security-advisory/cve-2023-25187/

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