CVE-2022-2483

Permanent secure boot disablement via flash key corruption

Published Jan 6, 2023 · Updated Jan 16, 2025

Secure boot bypass in Nokia ASIK AirScale 474021A.101 and 474021A.102 allows local users to disable firmware verification. The bootloader reads firmware-signing public keys from writable flash without protecting their integrity, so corrupting those keys permanently disables secure boot. Low-privileged local access is required, after which the device can no longer enforce its signed-firmware trust check at startup.

CVSS severity8.4
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Secure boot bypass in Nokia ASIK AirScale 474021A.101 and 474021A.102 allows local users to disable firmware verification. The bootloader reads firmware-signing public keys from writable flash without protecting their integrity, so corrupting those keys permanently disables secure boot. Low-privileged local access is required, after which the device can no longer enforce its signed-firmware trust check at startup.

The record

CVE
CVE-2022-2483
Published
Jan 6, 2023
Updated
Jan 16, 2025
Vendor
Nokia
Product
ASIK AirScale
Classifications
CWE-1282, T1495
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 16, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=474021A.101
  2. Affected versionversion=474021A.102

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Nokia · ASIK AirScaleversion=474021A.101; version=474021A.102

Published CVSS scores

7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
8.4ICS-CERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1282Assumed-Immutable Data is Stored in Writable Memory
T1495Firmware Corruption

Public exploit references

No public exploit references are available in this record.

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo