Credential disclosure via plaintext configuration backups
Published Mar 23, 2026 · Updated Mar 23, 2026
Plaintext credential storage in exported backups in Nexxt Solutions Nebula 300+ firmware 12.01.01.37 and earlier allows attackers to read secrets. The backup export writes administrative credentials and WiFi pre-shared keys without encryption or hashing, leaving those values directly readable in the resulting file. Access to legitimate backup functionality or another means of obtaining an exported file is required; disclosure permits router administration and WiFi network access.
Summary
What happened
Plaintext credential storage in exported backups in Nexxt Solutions Nebula 300+ firmware 12.01.01.37 and earlier allows attackers to read secrets. The backup export writes administrative credentials and WiFi pre-shared keys without encryption or hashing, leaving those values directly readable in the resulting file. Access to legitimate backup functionality or another means of obtaining an exported file is required; disclosure permits router administration and WiFi network access.
The record
- CVE
- CVE-2026-31850
- Published
- Mar 23, 2026
- Updated
- Mar 23, 2026
- Vendor
- Nexxt Solutions
- Product
- Nebula 300+
- Classifications
- CWE-256, T1552.001
- Attack vector
- adjacent
- Privileges
- admin
Timeline
How it unfolded
- Mar 23, 2026CVE publishedPublication date reported by the CVE source.
- Mar 23, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=<= 12.01.01.37
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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