CVE-2026-19748: Tenda Smart Camera predictable session authentication bypass

CVE-2026-19748 · Severity: low · CVSS 3.7 · Published 2026-08-13

Tenda smart cameras use simple integer values as session tokens instead of cryptographically secure random tokens, allowing attackers to guess or enumerate valid administrator sessions without knowing the password. An attacker with network access to the camera's web interface can impersonate an administrator and gain full control over sensitive camera functions such as video access, security configuration, and authentication settings.

Technologies: Tenda CH10, Tenda CH7, Tenda CH7G, Tenda CP3, Tenda CP3 Pro, Tenda CP7, Tenda TC3B14C, Tenda TC3B15C, Tenda TC3T14C, Tenda TC3T15C. Vendors: Tenda.

Quick answers

Is CVE-2026-19748 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-19748 being exploited in the wild.
How severe is CVE-2026-19748?
Low severity, with a CVSS score of 3.7, published 13 August 2026.
Which products and versions are affected?
Tenda CH10 up to V26.4.41.36; Tenda CH7 up to V26.5.59.2; Tenda CH7G up to V26.5.60.2; Tenda CP3 up to V27.5.57.17; and 6 more.
Is there a fix for CVE-2026-19748?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-19748 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-19748?
Check whether you run Tenda CH10, Tenda CH7, Tenda CH7G or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an authentication bypass caused by insufficient entropy in session token generation. The vulnerable Kylin Web Service component in /user/bin/Kylin parses the SESSION cookie as a simple integer format (SESSION=%d) rather than using cryptographically secure random tokens. The CWebSessionManager_ParseSession function at address 0xF619C processes the integer session value directly from the HTTP Cookie header. An attacker with network access to the camera's web interface can enumerate or brute-force valid administrator session values (fewer than 1,000 attempts) to impersonate a legitimate logged-in administrator. The attack is especially practical when an administrator session is currently active. Additionally, the CWebSessionManager_ValidateCredentials function only validates the first six characters of the password, further weakening authentication. Successful exploitation grants full web administrator privileges, allowing attackers to modify security configurations, disable authentication, access video streams, and potentially chain this vulnerability with others for deeper device compromise.

Affected products

  • Tenda CH7 up to V26.5.59.2
  • Tenda CH7G up to V26.5.60.2
  • Tenda CH10 up to V26.4.41.36
  • Tenda CP3 up to V27.5.57.17
  • Tenda CP3 Pro up to V21.7.17.111
  • Tenda CP7 up to V26.5.45.17
  • Tenda TC3B14C up to V25.4.42.21
  • Tenda TC3B15C up to V25.4.26.53
  • Tenda TC3T14C up to V25.4.43.20
  • Tenda TC3T15C up to V25.4.43.21

Timeline

  • 2026-08-13: disclosed
  • other: Vulnerability affects firmware versions released after November 2025 unless redesigned

References

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