Upgrade printer firmware to the version (or later) listed in the Product Impact section of LEN-148876 - https://iknow.lenovo.com.cn/detail/420425
Configurations
Workarounds
Exploits
Credits
finder
Lenovo thanks Jia-Ju Bai, Wen-Han Xu, Rui-Nan Hu, Dong Zhang, Cheng Li, Zhen-Yu Guan, and Jian-Wei Liu of the School of Cyber Science and Technology of Beihang University for reporting these issues.