Are MultiTech's eCell or rCell 500 vulnerable to Spectre/Meltdown (Side-Channel Attacks)?

Some processors, microprocessors, or microcontrollers are vulnerable to the following attacks:
* Variant 1: Bounds check bypass (CVE-2017-5753 aka Spectre - )
* Variant 2: Branch target injection (CVE-2017-5715 aka Spectre - )
* Variant 3: Rogue data cache load (CVE-2017-5754 aka Meltdown - )

MTR5-x  (MTR5-LAT4, MTR5-LEU2)
MTE-x   (MTE-LAT2)

MIPs indicated the following, "Advance notice regarding security vulnerabilities on processors with speculative execution was provided several months ago to MIPS. After investigation, it was determined that MIPS-designed cores in the highly popular M- and I-class product lines are not impacted by these exploitation techniques. This also extends to all previous generations of MIPS-designed cores that fall under our lineup of legacy cores."

MultiTech's eCell and rCell 500 products use legacy MIPs cores, so they are not impacted by this vulnerability.

None of MultiTech's eCell or rCell 500 products (as of January 19, 2018) are vulnerable to the Spectre/Meltdown attacks.