Configuration tampering via hard-coded backup encryption key
Published May 13, 2026 · Updated May 13, 2026
Hard-coded-key use in ELECOM wireless LAN routers allows remote attackers to tamper with encrypted configuration backups. The backup routine encrypts every exported configuration with a key embedded in firmware, so attackers who obtain it can modify protected settings. Exploitation requires knowledge of the key and an administrator to import the crafted backup; JPCERT/CC confirms configuration tampering, while ELECOM reports arbitrary code execution as the resulting impact.
Summary
What happened
Hard-coded-key use in ELECOM wireless LAN routers allows remote attackers to tamper with encrypted configuration backups. The backup routine encrypts every exported configuration with a key embedded in firmware, so attackers who obtain it can modify protected settings. Exploitation requires knowledge of the key and an administrator to import the crafted backup; JPCERT/CC confirms configuration tampering, while ELECOM reports arbitrary code execution as the resulting impact.
The record
- CVE
- CVE-2026-25107
- Published
- May 13, 2026
- Updated
- May 13, 2026
- Vendor
- ELECOM CO., LTD.
- Product
- WRC-X1800GSA-B
- Classifications
- CWE-321, T1565.001
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 13, 2026CVE publishedPublication date reported by the CVE source.
- May 13, 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?
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- Affected versionversion=v1.19 and earlier
What conditions does exploitation require?
What is affected?
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.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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