CVE-2023-25187Public exploit

Service-session interception via unchanged default SSH keys

Published Jun 16, 2023 · Updated Dec 12, 2024

Hard-coded SSH keys in Nokia AirScale ASIKA Single RAN releases 19B through 21A allow local users to intercept service sessions. Commissioning leaves factory-installed, operator-specific SSH host key pairs unchanged, enabling an internal adversary holding the same keys to impersonate the BTS SSH endpoint. Exploitation requires access to the CSP internal BTS management network, administrator-enabled SSH during troubleshooting, and interaction by service personnel; the keys alone do not authenticate a service user to the BTS.

CVSS severity6.3
Medium
EPSS probability0.96%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hard-coded SSH keys in Nokia AirScale ASIKA Single RAN releases 19B through 21A allow local users to intercept service sessions. Commissioning leaves factory-installed, operator-specific SSH host key pairs unchanged, enabling an internal adversary holding the same keys to impersonate the BTS SSH endpoint. Exploitation requires access to the CSP internal BTS management network, administrator-enabled SSH during troubleshooting, and interaction by service personnel; the keys alone do not authenticate a service user to the BTS.

The record

CVE
CVE-2023-25187
Published
Jun 16, 2023
Updated
Dec 12, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-798, T1557
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 16, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 12, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.3NokiaCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-798Use of Hard-coded Credentials
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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