The official patch for this vulnerability was released by ISPs in . If your router has never been updated, any firmware dated after November 2017 likely includes the fix. However, even with the patch, the HG532s has other unpatched flaws:
Use the Wayback Machine (archive.org) to locate older support pages. Alternatively, ask on community forums like DSLReports or Reddit’s r/homenetworking – someone may have archived the file. huawei hg532s firmware update download
In 2016 and 2017, security researchers discovered several critical vulnerabilities in the HG532s firmware (most notably CVE-2016-10174, CVE-2016-10175, and CVE-2017-17215). These exploits allowed remote attackers to execute malicious commands, change DNS settings (spoofing), and even recruit the router into botnets like Mirai and Satori. The official patch for this vulnerability was released