The US cybersecurity agency CISA on Thursday released industrial control system (ICS) advisories for vulnerabilities affecting Future X Communications (FXC) routers and QNAP network video recorder (NVR) devices, and warned organizations that they have been exploited in the wild.
The first CISA advisory informs users that AE1021 and AE1021PE outlet wall routers made by Japanese company FXC, which are typically used in hotels and residential units, are affected by CVE-2023-49897, a high-severity command injection flaw that can be exploited by an authenticated attacker for remote code execution via NTP server settings.
CISA said the vulnerable products are deployed in Japan in the IT and commercial facilities critical infrastructure sectors.
The second advisory published by the agency covers CVE-2023-47565, a similar high-severity flaw affecting QNAP VioStor NVR devices, which are used worldwide in the commercial facilities critical infrastructure sector.
It’s worth noting that in QNAP’s case, the security hole was actually patched nearly a decade ago with the release of firmware version 5.0. The targeted devices are legacy models that are no longer supported.
Neither of the two vendors mentions active exploitation of the vulnerability in their recent security advisories.
Information about malicious exploitation has been provided by cybersecurity firm Akamai, which has seen the vulnerabilities being leveraged in a campaign it tracks as InfectedSlurs.
“The malicious payloads captured in the wild install a Mirai-based malware with the intention of creating a distributed denial-of-service (DDoS) botnet,” the company warned in separate blog posts published earlier this month.
While exploitation of both vulnerabilities requires authentication, it appears that the cybercriminals are relying on the fact that users have failed to change the weak default passwords the devices were shipped with.
CISA has added the flaws to its known exploited vulnerabilities catalog.