Vulnerability · Published Sep 2, 2025 · Assigned by VulDB

CVE-2025-9828Tenda CP6 uhttp sub_2B7D04 risky encryption

Low 3.7

In plain English

A low-severity broken cryptography in CP6 from Tenda. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 29% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.4%top 70.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

A vulnerability was determined in Tenda CP6 11.10.00.243. The affected element is the function sub_2B7D04 of the component uhttp. Executing manipulation can lead to risky cryptographic algorithm. The attack may be launched remotely. This attack is characterized by high complexity. The exploitability is described as difficult. The exploit has been publicly disclosed and may be utilized.

Affected products (as reported)

Vendor	Product	Versions
Tenda	CP6	11.10.00.243

Weakness: CWE-327, CWE-310 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:P/RL:X/RC:R

References

VDB-322175 | Tenda CP6 uhttp sub_2B7D04 risky encryption vdb-entry, technical-description
VDB-322175 | CTI Indicators (IOB, IOC, TTP, IOA) signature, permissions-required
Submit #641566 | Tenda CP6 V11.10.00.243 CWE-327 Use of a Broken or Risky Cryptographic Algorithm third-party-advisory
https://github.com/IOTRes/IOT_Firmware_Update/blob/main/Tenda/CP6.md exploit, patch
https://www.tenda.com.cn/ product