CVE-2022-45552Public exploit

Firmware disclosure via unprotected SPI flash access

Published Mar 3, 2023 · Updated Jul 9, 2026

Information disclosure in ZBT WE1626 Router 21.06.18 allows physically proximate attackers to read firmware through the SPI bus. The exposed NAND-flash pinout permits unrestricted SPI reads, while unencrypted storage allows flashrom to dump the filesystem. Physical access and an SPI bus interface are required; extracted images expose sensitive files such as /etc/shadow and /etc/passwd.

CVSS severity7.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in ZBT WE1626 Router 21.06.18 allows physically proximate attackers to read firmware through the SPI bus. The exposed NAND-flash pinout permits unrestricted SPI reads, while unencrypted storage allows flashrom to dump the filesystem. Physical access and an SPI bus interface are required; extracted images expose sensitive files such as /etc/shadow and /etc/passwd.

The record

CVE
CVE-2022-45552
Published
Mar 3, 2023
Updated
Jul 9, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276, T1005
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2023CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1005Data from Local System

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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