What is CVE-2023-25187?

CVE-2023-25187 is a medium-severity vulnerability in Nokia Asika Airscale, classified under Use of Hard-coded Credentials. CVSS score: 6.3/10. Published 2023-06-16.

How severe is CVE-2023-25187?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Vulnerability in Nokia Asika Airscale

CVE-2023-25187

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.

Published 2023-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (59.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

Nokia Asika Airscale
Nokia Asika Airscale Firmware — versions 19b, 20a, 20b

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

Nokia.com (Product)
www.nokia.com/about-us/security-and-privacy/product-security-advisory/cve-2023-… (Vendor Advisory)
packetstormsecurity.com/files/173055/Nokia-ASIKA-7.13.52-Private-Key-Disclosure… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2023-25187?: CVE-2023-25187 is a medium-severity vulnerability in Nokia Asika Airscale, classified under Use of Hard-coded Credentials. CVSS score: 6.3/10. Published 2023-06-16.
How severe is CVE-2023-25187?: Medium severity. CVSS v3 base score is 6.3 out of 10.