Authenticated memory corruption via unchecked SSID length
Published May 8, 2025 · Updated May 12, 2025
Stack-based buffer overflow in TOTOLINK NR1800X 9.1.0u.6681_B20230703 allows remote authenticated users to corrupt memory via ssid5g. The setWiFiEasyCfg handler passes an overlong ssid5g value into urldecode without checking its length, overwriting a stack buffer. Successful exploitation overwrites stack memory; the published request requires a valid session token, and the demonstrated artifact does not establish code execution.
Summary
What happened
Stack-based buffer overflow in TOTOLINK NR1800X 9.1.0u.6681_B20230703 allows remote authenticated users to corrupt memory via ssid5g. The setWiFiEasyCfg handler passes an overlong ssid5g value into urldecode without checking its length, overwriting a stack buffer. Successful exploitation overwrites stack memory; the published request requires a valid session token, and the demonstrated artifact does not establish code execution.
The record
- CVE
- CVE-2025-45842
- Published
- May 8, 2025
- Updated
- May 12, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-121
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- May 8, 2025CVE publishedPublication date reported by the CVE source.
- May 12, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- TOTOLINK NR1800X setWiFiEasyCfg proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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