Cross-origin data disclosure via credentialed wildcard CORS
Published Jan 26, 2026 · Updated Jan 26, 2026
Permissive CORS in W30E V2 firmware 16.01.0.19(5037) and earlier allows remote attackers to read administrative data cross-origin. Authenticated administrative endpoints return Access-Control-Allow-Origin: * together with Access-Control-Allow-Credentials: true, trusting attacker-controlled origins. Exploitation requires a logged-in administrator to visit attacker-controlled web content; the documented consequence is cross-origin disclosure of administrative data.
Summary
What happened
Permissive CORS in W30E V2 firmware 16.01.0.19(5037) and earlier allows remote attackers to read administrative data cross-origin. Authenticated administrative endpoints return Access-Control-Allow-Origin: * together with Access-Control-Allow-Credentials: true, trusting attacker-controlled origins. Exploitation requires a logged-in administrator to visit attacker-controlled web content; the documented consequence is cross-origin disclosure of administrative data.
The record
- CVE
- CVE-2026-24435
- Published
- Jan 26, 2026
- Updated
- Jan 26, 2026
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- W30E
- Classifications
- CWE-942, T1189
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 26, 2026CVE publishedPublication date reported by the CVE source.
- Jan 26, 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=0 <=16.01.0.19(5037)
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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