The presentation transmission permission management mechanism in Huawei TE30, TE40, TE50, and TE60 multimedia video conferencing endpoints with software before V100R001C10SPC100 allows remote attackers to cause a denial of service (wired presentation outage) via unspecified vectors involving a wireless presentation.

Huawei TE30, TE40, TE50, and TE60 multimedia video conferencing endpoints with software before V100R001C10SPC100 do not require entry of the old password when changing the password for the Debug account, which allows physically proximate attackers to change the password by leveraging an unattended workstation.

The RC4 algorithm, as used in the TLS protocol and SSL protocol, does not properly combine state data with key data during the initialization phase, which makes it easier for remote attackers to conduct plaintext-recovery attacks against the initial bytes of a stream by sniffing network traffic that occasionally relies on keys affected by the Invariance Weakness, and then using a brute-force approach involving LSB values, aka the "Bar Mitzvah" issue.